Abstract
The thesis that schooling inevitably leads to secularization continues to be debated. Indeed, while education has become a central and authoritative institution across the world, religiosity seems to persist. An alternative hypothesis proposes that recognizing the cultural aspects of the growth of “schooled societies” may reveal unexpected compatibilities between education and religiosity. However, research that both empirically integrates these aspects and examines their relationship with religiosity from a global perspective remains scarce. Against this background, this article first constructs a macro-level indicator that taps into cross-national variation in the different dimensions of “schooled societies.” Subsequently, we examine its relationship with the subjective importance of religion in people’s lives and individual-level educational differences in religiosity. Results based on data from 94,011 respondents across 76 countries show that in societies that are more “schooled,” people generally tend to be less religious. Moreover, the development of a schooled society moderates the relationship between educational attainment and religiosity. In societies that show more characteristics of a schooled society, especially less educated people are likely to remain religious. Finally, we found that our new indicator for the schooled society explained more variance than other, less fine-grained indicators of this concept. This illustrates the added value of a more comprehensive indicator for the role of schooling as an institution. In the conclusion, we use our findings to outline a research agenda.
Keywords
According to classical secularization theory, the modern world offers limited space for religiosity. During modernization, references to religious forces would initially be banned to the private sphere, subsequently fade away, and finally be replaced by a rational and scientific perception of reality (Bruce, 2002; Wallace, 1966). The secularization thesis has consistently highlighted the role of education as a major disenchanting force (e.g. Voyé and Dobbelaere, 1994; Wilson, 1982). As the central agent of a scientific and fact-based worldview, so the argument goes, education posits fundamental ontological problems for religious beliefs. Through schooling, people would come to understand the empirical relationship between events, thus “disproving” religious explanations for the world. Moreover, contemporary curricula are thought to instill modern values and attitudes that are at odds with traditional religious thoughts, while disseminating the view of a human-centered society (Norris and Inglehart, 2011; Smith, 2003).
Despite these predictions, religious commitment seems to persist in modern societies characterized by mass schooling. Over the past century, each generation has spent, on average, more years in formal education than their parents (e.g. UNESCO, 2020). Furthermore, people’s educational attainment increasingly explains a wide range of outcomes, including attitudes and aspects of one’s socio-economic and cultural position (Kalmijn and Kraaykamp, 2007; Kingston et al., 2003). The observation that religious life continues to play a significant role in modern highly schooled societies has led to intense debate on the fate and nature of religiosity in the contemporary world (Berger, 2008; Stark, 1999). In that context, scholars such as David Baker (2019) have proposed that schooling and religion are both historically and currently compatible and even reinforcing institutions, as exemplified by the United States, a country that is both highly educated and where a considerable proportion of the population is strongly religious. Along with an emerging literature that explores the
Against that background, this article examines (1) the empirical relationship between schooling and religiosity from a
To achieve the objectives of this study, we relied on the integrated data from the World Values Survey (WVS) and the European Values Study (EVS) gathered among 94,011 respondents across 76 countries. Using multilevel regression analyses, we examined the effects of our multidimensional schooled society indicator on the importance of religion in people’s lives,
Schooling and religiosity: a necessary antagonism?
The disenchantment of the world
Over the past decades, there has been intense debate in sociology about the place of religiosity in the modern world and its relationship with schooling. Classically, secularization theory predicted that modernization, with its expanding education, scientization, and rationalization, should inevitably diminish the significance of religion in people’s lives (e.g. Smith, 2003; Voyé and Dobbelaere, 1994). Either as a consequence of an epistemological conflict originating in the dissemination of schooled and scientific knowledge and rational thought (Wilson, 1982) or by causing general human development and thus providing better living conditions and existential security (Norris and Inglehart, 2011), formal education has systematically been considered a major force in this secularization process. Indeed, from the outset, sociological theory assumed that more schooling would lead to less religiosity (Bruce, 2002; Wallace, 1966).
The most radical versions of secularization theory, however, have been criticized on the basis of two arguments. First, while societies worldwide are modernizing and schooling everywhere becomes universal, the disappearance of religiosity has never fully occurred (Berger, 2008; Hadden, 1987). Over the past years, for example, commitment to religions such as Islam and Evangelical Christianity have remained stable or even increased (e.g. Norris and Inglehart, 2011; Stark, 1999). Moreover, it seems that the expected association between modernization and different aspects of religiosity varies according to the historical context of societies, indicating “overlooked variability” in religious change (cf. Kusano and Jami, 2022) and thereby challenging the idea of a simple, universal pattern. Second, there is the question of what exactly secularization is. Increasingly, it is argued that the decline of the political power of the church and the decreasing attendance at religious services among Roman Catholics and Protestants in Western European societies has been misunderstood as the disappearance of religiosity tout court (e.g. Norris and Inglehart, 2011; Stark, 1999). Instead, people remain religious in a non-institutional way, as exemplified by the emergence of new religious and spiritual movements (Davie, 1994; Houtman and Aupers, 2007).
The education-religion paradox
Despite much research on the subject, there remains debate on how people’s education and religiosity are related (for an overview, see Mayrl and Oeur, 2009). At the individual level, cross-sectional and panel studies conducted in the United States have pointed to the negative relationship between educational attainment and traditional religious beliefs such as biblical literalism and belief in a deity (Hill, 2011; McFarland et al., 2011). Cross-national research of 26 European (Immerzeel and Van Tubergen, 2013) and 10 Eastern European countries (Need and Evans, 2001) also concluded that the higher educated participate less in religious services. However, other research from the United States found that higher levels of education were not associated with a decrease in belief in God or an afterlife, or even promoted religious participation (Eickelman, 1992; Iannaccone, 1998; Schwadel, 2011). Similarly, schooling seems to have stimulated (often anti-colonial) religious movements established by higher educated youths (Anderson, 2006), and it was mainly the latter that engaged in new forms of religious activism in Arab societies (Eickelman, 1992). Thus, results remain ambiguous about the relationship between educational attainment and aspects of religiosity. The latter seems to be dependent on the larger historical, religious, and educational context (Kusano and Jami, 2022; Schwadel, 2015; Stroope, 2011). However, even when taking the possible effects of schooling at a contextual level into account, results remain inconclusive. On the one hand, longitudinal research from Germany and the Netherlands found declining patterns of church membership and belief in the supernatural with increasing education on the aggregate level (e.g. Becker et al., 2017; De Graaf and Te Grotenhuis, 2008; Schwadel, 2015). Moreover, a cross-congregational study in the United States observed that people were both less inclined to take the Bible literally in congregations where the higher educated were dominant and that the effects of individual education become more important in those congregations (Stroope, 2011). On the other hand, when taking a more global approach, Ruiter and Van Tubergen (2009) found in a study of 60 countries worldwide that the negative relationship between the educational expansion and religious participation was relatively weak and inconsistent. Moreover, generally schooling seems to have a stronger impact on the rejection of traditional than non-traditional religious beliefs (Baker, 2019).
When taken together, the previous examples illustrate the need for further empirical research on the relationship between education and religiosity that (1) adopts a
The relevance of context and the emergence of schooled societies
The schooled society and the need for an indicator
Never before has schooling been such a globally ubiquitous and powerful institution (Baker, 2014; Meyer, 1977). Perceived as one of the most “functional” institutions of modern societies (cf. Meyer, 1977), schooling is typically presented as a key variable in the larger “development project” of globally integrated nation-states, as it would lead to greater individual, economic, and national development, less poverty and health problems, and, importantly, less discrimination and illegitimate forms of inequality (Fiala, 2007; Fiala and Lanford, 1987). This trend, whereby schooling
The educational expansion
The
The culture of education
The rise of mass schooling burgeoned with the formation of nation-states, the construction of a citizenry, and the development of a model of the individual and society as a project aimed at “development” (Meyer et al., 1992; Ramírez and Boli, 1987). In the context of a developing world society in the post-World War II era, the belief in education and its role as driver of societal success diffused across the world (Fiala and Lanford, 1987; Schofer and Meyer, 2005). This “culture of education” sees schooling as universal development and defines new types of knowledge, competencies, success, and personnel (Baker, 2014; Meyer, 1977). This is strongly reflected in the extent to which (1) schooling is regarded as a fundamental individual right that everyone should receive (Ramírez et al., 2007); (2) societal “problems”—from prejudice, inequality, and citizenship to health, crime, and traffic safety—have become “educationalized” (i.e. presented in such a way that
Education-based stratification
The third dimension that we distinguish follows to some extent from the other dimensions: in schooled societies, education
Religious life in schooled societies
Institutional conflict or change?
The foregoing considerations about the diffusion and authority of education as an institution may lead to the idea that, rather than being necessarily antagonistic, the relationship between education and religiosity is defined by the extent to which both institutions historically struggle for power over different societal models and symbolic authority (Evans and Evans, 2008; Meyer, 1977; Smith, 2003). For example, the spread of mass schooling in Europe during the 19th century implied the weakening of the control of the Catholic Church over (childhood) socialization and access to elite positions. Much the same happened during the 20th century in countries in both Eastern and Western Asia, where state-sponsored schooling undermined the authority of traditional Islamist organizations and leaders and lead to the abolishment of Confucian education (e.g. Anderson, 2006; Eickelman, 1992). Moreover, the images of universality and individualism (cf. Boli, 1989) that have been globally diffused through the growth of schooled societies locate the authority of action and control with the individual and the formal organization rather than with religious and super-empirical forces (Schofer and Meyer, 2005; Thomas, 2001). Consequently, religious control, beliefs, and ways of life may be increasingly stigmatized and seen as a threat to individualistic notions of entitlement, a world in which societal positions are believed to be achieved, and general development. Finally, in schooled societies, schooled-based and scientific bodies of knowledge increasingly become authoritative and an imperative basis for action. This tendency causes religious and magical solutions to societal problems to become illegitimate (Meyer, 1977). If education can indeed be seen as “a secular religion in modern societies” (cf. Meyer, 1977: 72), it seems hardly surprising that its legitimations of the structure and culture it creates conflict with other versions of the world. The development of schooled society would then undermine religious life.
It is, however, also possible that the opposition in schooled societies to the authority of (traditional) religiosity has mainly led to
The educational gap in religiosity moderated by the growth of schooled societies
Finally, the development of schooled societies changes the meaning and importance of individual educational attainment (Meyer, 1977). Indeed, it not only affects the position and meaning of being higher educated,
Data and methodology
Data
To answer our research questions, we searched for data that (1) covered a large number of countries, (2) provided country-level information on education, and (3) included measures of religiosity. For this, we relied on individual-level survey data, as well as aggregated survey data and national administrative information. The survey data that met these requirements came from the integrated dataset of the most recent waves of the WVS and the EVS. Both are ongoing large-scale cross-national data collection programs based on nationally representative samples obtained through face-to-face interviews (see Appendix A, Supplemental material). These social surveys have collected individual data on a wide range of values and attitudes relating to various societal domains, including religion and trust in institutions (e.g. the educational system), and on sociodemographic characteristics, such as educational attainment, age, and gender.
In this study, we used the integrated dataset from the seventh wave (2017–2020) of the WVS and the fifth wave (2017–2020) of the EVS. In order to include as many countries as possible in our analyses, we added to this dataset the data of country samples that did not occur in the latest waves of the WVS/EVS but were included in the sixth wave (2010–2014) of the WVS and the fourth wave (2008–2010) of the EVS. 1 For five countries (Germany, Greece, Romania, Russia, and Serbia), we merged the data from the WVS and the EVS, as they participated in both surveys. In our analyses, we included only those countries for which all relevant individual-level and country-level information was available. 2 After excluding all respondents under 25 years of age (to ensure that the majority of respondents had completed their education) and those who had missing values for at least one of the variables, we obtained a final sample of 94,011 respondents across 76 countries (including 37 European, 18 Asian, 8 African, 8 South American, 3 North American, and 2 Oceanian countries; see Appendix A, Supplemental material). These data bring us as close to a global approach as is currently possible. See Appendix D.1 (Supplemental material) for a comprehensive overview of the countries, data sources, sample sizes, and country-level measurements.
Dependent variable
As the theory of schooled society refers to a global historical development, we want to analyze its relationship with as general a form of religiosity as possible. Therefore, we used an item that reflects the perceived importance of religion in one’s life, measured by a 4-point scale ranging from “Very important” to “Not at all important.” We recoded this item so that higher scores would reflect a higher importance attributed to religion. 3 Across 76 countries, 65% of the respondents experienced religion as at least important in their lives.
This variable allows us to measure religiosity in a way that is (1) significantly associated with other aspects of religiosity (as it measures the perceived
Toward a measure of the schooled society
For the development of measures for the different subdimensions of the schooled society, we needed cross-nationally comparable country-level data. Taking this into account, we used several
The
We used three proxies for the
Finally, respondents’
Control variables
GDP per capita, gender, age, marital status, unemployment, income level, and religious denomination were included as control variables (see Appendix B, Supplemental material). At the country level, we gathered World Bank statistics on the
Research strategy
The analyses were conducted in two steps. First, we constructed a country-level indicator for the schooled society that taps into its multiple dimensions. To this end, we generated factor scores for each of these subdimensions through principal component analyses. Next, we examined the extent to which these subdimensions could be captured by a second-order scale that reflected variation in the development of schooled societies (see Appendix D, Supplemental material). Second, we assessed the relevance of this indicator by examining its relationships with individual-level religiosity by estimating linear multilevel regression models (e.g. Snijders and Bosker, 2012). We then added cross-level interaction terms to investigate whether the effect parameters of individual-level educational differences in religiosity were moderated by the level of development of a schooled society. 4 We also examined whether the relationship between the schooled society, educational attainment, and religiosity varied according to a country’s religious tradition (measured as its religious majority; see Appendix K, Supplemental material). Additionally, we conducted a series of robustness checks. We re-estimated our models by including an alternative scale of the schooled society indicator (Appendix E, Supplemental material); integrating the subdimensions of the schooled society separately (Appendix F, Supplemental material); analyzing different aspects of religiosity (Appendix G, Supplemental material); and controlling for non-linear associations (Appendix H), region (or country non-independence; Appendix I, Supplemental material), religious denomination (Appendix J, Supplemental material), country-level religious characteristics (Appendix K, Supplemental material), and wave (Appendix L, Supplemental material). Finally, all continuous variables included in the analyses were standardized. Replication files are provided publicly on the Open Science Framework (OSF) via: https://osf.io/xyz7p/?view_only=d74cf3cd06794d82a32f30a53c0babea.
Results
Measuring the development of schooled society
A brief examination of the various aspects of the subdimensions of the schooled society showed substantial between-country differences (see Appendix D.1, Supplemental material). For example, while the average number of years of schooling increases in a parallel manner worldwide, in countries such as Ethiopia, Myanmar, and Rwanda, less than 5% of the population has attained tertiary education, compared to over 40% in countries like Australia, Kazakhstan, South Korea, and the United States. Similarly, the proportion of the population that has a high degree of faith in education—which is fairly high on average across 102 countries (68.4%)—varied from 24.6% (Egypt) to 92.8% (Vietnam). Differences in the number of scientific researchers were immense (13.86 per million inhabitants in Rwanda to 8065.89 in Denmark). Finally, there were large differences in, for instance, the explanatory power of educational attainment as to the level of civic participation: the explained variance ranges from 0.1% (Myanmar) to 19.5% (Portugal). Such variation manifested itself also for the other proxies (see Appendix B, Supplemental material).
In this study, however, we are mainly interested in the global
Results of principal component analyses of the educational expansion (
GDP: gross domestic product.
Next, we examined to what extent these subdimensions could be captured by one common second-order factor. Simple bivariate correlations (see Appendix D.2, Supplemental material) indicated positive and significant relationships between the educational expansion and the culture of education (
Finally, we constructed a
The effects of the schooled society on the perceived importance of religion
Having constructed a scale that reflects the relative development of a schooled society across 77 countries, we examined the extent to which this was related to cross-national variation in religiosity. Table 2 shows that the level of development of a schooled society had a strong negative relationship with religiosity (Model 1). People were less likely to experience religion as important when education was a more central and authoritative institution. Figure 1 shows this relationship at the aggregate level. Interestingly, a country’s GDP only partially explained the relationship between the development of a schooled society and the perceived importance of religion, revealing that both the national economic capital and the centrality of schooling in a country had an independent relationship with it (Model 2). Moreover, the multidimensional schooled society indicator was a better predictor of the perceived importance of religion than its separate subdimensions and the measure used in previous studies, namely the share of higher educated per country (see Table A5 in Appendix F, Supplemental material). This finding highlights the added value of using a more comprehensive indicator of the centrality and authority of schooling in explaining cross-national variation in the perceived importance of religion.
Results of linear multilevel regression analyses on
GDP: gross domestic product; ICC: intraclass correlation.
Regression coefficients, significance levels, and standard errors (in parentheses). Information null model: Intercept = 0.015; –2 Log likelihood = 224,333.4; ICC = 0.372; Individual-level variance = 0.633; Contextual-level variance = 0.375. The model including the cross-level interaction terms was estimated while allowing the effects of the level of schooling to vary across countries (i.e. a random slopes model) (Heisig and Schaeffer, 2019). Models were estimated by accounting for correlations between the intercept and slopes.
These variance components were estimated based on a model without random covariances, as random slopes only allow for variation

Country mean of the importance of religion in life on the degree of development of the schooled society.
Furthermore, we systematically found a significant negative association between the development of a schooled society and other experiences of subjective religiosity and public religious life (or authority) as well (see Appendix G, Supplemental material). Only for identification as a religious person did we find a weak relationship that was significant at the
Overall, then, the presence of schooled society seems to undermine religious society without exception. Indeed, controlling for the religious majority of a country (see Appendix K, Supplemental material) did not alter our results. Moreover, we found that the association was similar across different religious contexts. Figure 2 displays the aggregate scores of the perceived importance of religion in one’s life on the degree of development of schooled society by religious majority. This clearly illustrates differences between religious traditions in terms of the development of schooled society and the importance of religion. For example, countries with an Islamic majority were less “schooled” and on average more religious, while the opposite is true for Protestant countries. 5 Crucially, however, across all religious contexts the direction of the relationship was the same: in societies where schooling was a more central and authoritative institution, people were generally less religious.

Country mean of the importance of religion in life on the degree of development of the schooled society, by religious majority.
Differences in the perceived importance of religion between educational groups
Furthermore, we investigated whether the level of development of schooled societies moderated the association between individual educational attainment and the perceived importance of religion by adding a cross-level interaction term between the indicator for the development of a schooled society and individual schooling in Model 3 of Table 2. By doing so, we aimed to (1) examine whether educational attainment does indeed increase in societal importance in more schooled societies (see also Van Noord et al., 2019) and (2) identify a potential direction through which the education paradox regarding religiosity (i.e. how can religious life persist in highly educated societies?) can be bridged. We found that people with higher levels of schooling were less likely to be religious. Model 3 shows that this negative association between educational attainment and the perceived importance of religion

Importance of religion in life by educational group on the degree of development of the schooled society.
These observations support prior research suggesting that education has similar effects on a global level and across different contexts, but that these effects are more pronounced in schooled societies (Van Noord et al., 2019; see also Kołczyńska, 2020; Schwadel, 2015). However, these observations must be qualified in some respects by the analyses based on the separate aspects of religiosity (see Appendix F, Supplemental material). First, we did

Importance of religion in life by educational group on the degree of development of the schooled society, by religious majority.
Regarding the control variables, the economic capital of a country systematically had a negative, significant relationship with the various forms of religiosity. At the individual level, the elder, groups with lower levels of income, the married and widowed, Eastern Orthodox people, and especially women exhibited higher levels of religiosity.
Finally, we conducted a series of additional robustness checks by controlling for region, country-level religious characteristics, and wave (Appendices I–L, Supplemental material). None of these checks altered our substantive conclusions.
Discussion and conclusion
Starting from the ongoing debate on the education-religion paradox, this study examined (1) cross-national variation in what Baker (2014) has described as the growth of
Although our empirical analyses did not allow us to determine exactly
Our findings further underscore the relevance of country-level characteristics of schooling in explaining the relationship between individual educational attainment and the perceived importance of religion (see also Schwadel, 2015). The negative association between education and the perceived importance of religion appears to be affected by the degree of development of a schooled society. In the least schooled societies, where the aggregate level of religiosity is generally high, educational differences in the perceived importance of religion were present, with the higher educated often constituting the least religious group. This suggests that the higher educated are the most ardent secularizers in poorly schooled and strongly religious contexts, adopting a globally diffused and school-based view of the world and struggling for societal recognition (Evans and Evans, 2008; Kołczyńska, 2020). In societies that are characterized by a high degree of centrality of education, the rejection of religion’s importance in life is more common among less educated groups as well.
However, the impact of the development of schooled society on the perceived importance of religion seems to affect the least educated to a lesser extent. While middle educated groups quite consistently saw religion as similarly important as the higher educated, the less educated remained more religious, even in the more schooled societies. It is thus plausible that the negative relationship between educational attainment and the perceived importance of religion in those societies is not fully due to the effects of going longer to school and receiving higher education, but partly to the rejection of secular beliefs and behaviors by the less educated. While we cannot verify this empirically with the current study, this could be because they are less affected by the socialization of schools and education-based narratives. Moreover, given that in schooled societies (Spruyt and Kuppens, 2015), educational attainment increasingly becomes a central source of social status (Van Noord et al., 2019), the higher educated develop an intergroup bias toward the lower educated (Kuppens et al., 2018) and a lack of education is increasingly equated with incompetence, poor decision-making, and personal and societal problems (Sandel, 2020), it becomes particularly difficult for the less educated to develop a positive identity. The greater importance attributed to religion (and the associated other aspects of religiosity) among the lower educated could then also be a reactionary strategy to provide themselves with a place in a world that rejects them. Finally, while previous research (Van Noord et al., 2019) has shown that educational differences with regard to social status take on an increasingly binary division in which those with a higher education degree are distinguished from those without, imitation processes (Elias, 2000 [1939]) by middle educated groups could explain why they are less religious as well.
The analyses presented in this article aim to further advance empirical research on the consequences and particularities of the growth of schooled societies. This theory argues that the role and effects of mass schooling as an institution are too often seen as just a “complement” to other institutions (Baker, 2014; Kingston et al., 2003; Meyer, 1977). More than an individual investment, a mere provider of knowledge and skills or a machine that operates to the beat of economic demands, education has increasingly become a central institution that authoritatively and legitimately influences people’s lives. We feel that this emerging literature can be further developed by (1) more concrete and applied comparative empirical research that (2) directs attention to national differences within this global trend. In this context, we believe that the theory of the schooled society is in need of an indicator. The bottom line of our argument is this: although we fully agree with previous accounts (Baker, 2014; Schofer and Meyer, 2005) that point to the striking similarities in how education as an institution has traveled the globe, we believe that only by simultaneously studying the relevance of national differences in this process will we achieve a full understanding of the meaning and implications of the growth of schooled societies. Clearly, however, further research should seek to overcome some limitations of our analysis. Most importantly, more and more accurate variables should be collected and integrated in the indicator. Indeed, the current version of the schooled society indicator does not take into account several important differences between countries’ educational systems. For example, the level of within-country differentiation of the educational system (e.g. tracking), or more direct measures of the extent to which education is seen as key to individual and societal development, a universal problem-solver and the basis of a just social structure (e.g. in educational policies and curricula) should be included. Further research should also aim to include more aspects of religiosity (e.g. spirituality). Finally, in this study, we focused on national differences within
Finally, although the current research focused on the religious domain, several considerations point to the relevance of the schooled society thesis in relation to other societal outcomes as well, such as political participation, occupational change, and gender relations. In these fields, too, “educational paradoxes” have been observed (e.g. Baker, 2014; Spruyt and Kuppens, 2015; Van Bavel et al., 2018). Achieving a better understanding of these paradoxes will only be possible if we broaden our view on schooling and not regard it as an institution that merely serves other institutions, but as a primary institution, a social force that deeply transforms social life.
Overall, this study offers an exploration of the consequences of the development of schooled societies and a demonstration of the added value of conceiving of mass schooling as more than merely an increase in the number of (highly) schooled people. The rise of schooled societies, a global trend whose institutionalization varies considerably across countries, appears to be an independent and important force in the decrease of religious life. Indeed, where education enjoys authority and legitimacy, religion seems to have lost it to a significant extent.
Supplemental Material
sj-docx-1-cos-10.1177_00207152231177238 – Supplemental material for Religious life in schooled society? A global study of the relationship between schooling and religiosity in 76 countries
Supplemental material, sj-docx-1-cos-10.1177_00207152231177238 for Religious life in schooled society? A global study of the relationship between schooling and religiosity in 76 countries by Leandros Kavadias, Bram Spruyt and Toon Kuppens in International Journal of Comparative Sociology
Footnotes
Acknowledgements
The authors are very grateful to Marieke Timmerman for her useful advice and comments regarding quadratic functions in logistic regression analyses.
Funding
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: Funding from the Research Foundation – Flanders (FWO). Grant number: 11H8922N.
Supplemental material
Supplemental material for this article is available online.
Notes
References
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