Nesa MaliK, F. T.; Kalimuddin, M.; Ishraquzzaman, M.; Al Mamun, M. A. .; Dutta, A.; Rahman, M. H.; Kanungo, S.; Laila, N.; Chowdhury, M. S.; Choudhury, S. R. . Wave-Wise Comparison of Demographics, Clinical Characteristics & In-Hospital Outcome of COVID-19 Pandemic in Bangladesh: Single Centre Study. Bangladesh Heart J 2023, 38, 13-21.