Dhanasekara, C. S., Chin, S.-H., & Kahathuduwa, C. N. (2021). Severity and case fatality rates of COVID-19: a systematic review, meta-analysis and an exploratory meta-regression of risk factors. The Southwest Journal of Medicine, 9(41), 8-19. https://doi.org/10.12746/swrccc.v9i41.921