Dhanasekara, Chathurika Samudani, Shao-Hua Chin, and Chanaka N. Kahathuduwa. 2021. “Severity and Case Fatality Rates of COVID-19: A Systematic Review, Meta-Analysis and an Exploratory Meta-Regression of Risk Factors”. The Southwest Respiratory and Critical Care Chronicles 9 (41), 8-19. https://doi.org/10.12746/swrccc.v9i41.921.