Awal, A. ., K. S. . Al Mamun, M. R. . Karim, M. S. U. . Azad, and F. U. . Ahmed. “Prognostic Value of Electrocardiographic Abnormalities and Troponin-I Elevation in Hospitalized COVID-19 Patients”. Bangladesh Heart Journal, vol. 36, no. 2, Oct. 2021, pp. 105-12, doi:10.3329/bhj.v36i2.56036.