R. J. Sitorus, N. . Yudi Antara, R. . Elviani, Z. . Ahmad, H. . Hudari, and R. V. . Sangalang, “The Risk Factor for Mortality in COVID-19 Patients in Mohammad Hoesin Hospital, Palembang, Indonesia”, JIKM, vol. 12, no. 1, pp. 69–76, Mar. 2021.