H. A. Willim, C. Cristianto, Y. R. I. B. Sihombing, E. L. Munthe, W. Mujono, and E. Enny, “Clinical Characteristics of Coronavirus Disease 2019 in Dr. Agoesdjam Regional Public Hospital, Ketapang, West Kalimantan, Indonesia”, J Epidemiol Public Healt, vol. 5, no. 3, pp. 293–308, Dec. 2020.