World Health Organization. Clinical management of Severe Acute Respiratory Infection (SARI) when COVID-19 disease is suspected: interim guidance, 2020. Accessed January 19, 2023. https://apps.who.int/iris/handle/10665/331446
2.
OsibogunABalogunMAbayomiA, et al. Outcomes of COVID-19 patients with comorbidities in southwest Nigeria. PLoS ONE. 2021;16(3):e0248281.
3.
NoorFMIslamMM. Prevalence and associated risk factors of mortality among COVID-19 patients: a meta-analysis. J Community Health. 2020;45(6):1270-1282.
4.
CallenderLACurranMBatesSMMairesseMWeigandtJBettsCJ. The impact of pre-existing comorbidities and therapeutic interventions on COVID-19. Front Immunol. 2020;11:1991.
5.
XiongTYRedwoodSPrendergastBChenM. Coronaviruses and the cardiovascular system: acute and long-term implications. Eur Heart J. 2020;41:1798-1800.
6.
WangXFangXCaiZ, et al. Comorbid chronic diseases and acute organ injuries are strongly correlated with disease severity and mortality among COVID-19 patients: a systemic review and meta-analysis. Research. 2020;2020:2402961.
