Rahman, Md Atiqur, et al. “Clinical Spectrum and Co Morbidities of COVID 19 Cases Admitted at Anwer Khan Modern Medical College Hospital (AKMMCH): A Retrospective Record Review”. Anwer Khan Modern Medical College Journal, vol. 13, no. 1, Dec. 2021, pp. 3-7, doi:10.3329/akmmcj.v13i1.64714.