Layla, K. N. ., S. Yeasmin, A. B. Azad, M. U. . Chowdhury, N. . Sultana, A. F. S. . Muhammad Shazedur Rahman, M. M. . Rahman, and R. L. Rafa. “Red Blood Cell Profile in Patients With Mild, Moderate and Severe COVID-19”. IMC Journal of Medical Science, vol. 15, no. 2, Aug. 2021, pp. 26-31, https://banglajol.info/index.php/IMCJMS/article/view/55811.