S. N. . Irfan, S. A. H. . Md Abdullah, T. H. . Siddiquee, M. R. . Bhuiyan, and S. . Mithun, “Epidemiological and Clinical Characteristics of Covid-19 Cases attended in a Tertiary Hospital in Bangladesh”, J. Armed Forces Med. Coll., vol. 17, no. 2, pp. 22–28, May 2022.