Ibrar Ahmad, Muhammad Salman Munir Malik, Saba Kabir, Ammar Ahmed, Iram Yousaf Malik, Rafi Ullah, Muhammad Afzal, et al. “RISK FACTORS ASSOCIATED WITH THE INFECTIVITY AND SEVERITY OF COVID-19 INFECTION”. Journal of Population Therapeutics and Clinical Pharmacology 31, no. 6 (June 14, 2024): 1181–1189. Accessed September 20, 2025. https://jptcp.com/index.php/jptcp/article/view/6648.