Abbas, S. S., M. W. Sajjad, H. Naeem, M. Ul Islam, I. Khan, A. Sabir, O. Imran, U. Arshad, S. N. Shah, and R. Afridi. “Pre-Operative Anemia As a Risk Factor of Morbidity and Mortality in Valvular Surgeries: Preoperative Anemia and Valvular Surgeries”. Pakistan Journal of Health Sciences, vol. 5, no. 03, Mar. 2024, pp. 12-16, doi:10.54393/pjhs.v5i03.1269.