Abbas, S. S.; Sajjad, M. W.; Naeem, H.; Ul Islam, M.; Khan, I.; Sabir, A.; Imran, O.; Arshad, U.; Shah, S. N.; Afridi, R. Pre-Operative Anemia As a Risk Factor of Morbidity and Mortality in Valvular Surgeries: Preoperative Anemia and Valvular Surgeries. PJHS 2024, 5, 12-16.