Risk Factors Associated with 28-Day Mortality of COVID-19 Patients at RSUP Dr. M. Djamil Padang. J Respirol Indones [Internet]. 2023 Feb. 3 [cited 2025 Aug. 28];43(1):22-33. Available from: http://www.jurnalrespirologi.org/index.php/jri/article/view/238