I. S. Warraich, I. Khan, M. Abid, S. Fatimah, Z. Irshad, and S. Hanif, “Clinico-Pathological Association of Haemoglobin At The Time of Presentation: A Predictive Tool of Survivorship in COVID-19”, PAFMJ, vol. 72, no. 1, pp. 244–48, Mar. 2022.