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”, Pak Armed Forces Med J, vol. 72, no. 1, pp. 244–48, Mar. 2022, doi: 10.51253/pafmj.v72i1.5840.