AndradeC. (2020). The inconvenient truth about convenience and purposive samples. Indian Journal of Psychological Medicine. Advance online publication. https://doi.org/10.1177/0253717620977000
2.
XingL.XuM.SunJ.WangQ.-X.GeD.JiangM.DuW.LiQ. (2020). Anxiety and depression in frontline health care workers during the outbreak of Covid-19. International Journal of Social Psychiatry, Advance online publication. https://doi.org/10.1177/0020764020968119