Khan, Muhammad Umer, Nauman Khokhar, Muhammad Ahmad Ashraf, Muhammad Usman Ghani, Saima Younas, Iram Amin, Muhammad Shahid, Inam Ullah, Rakhtasha Munir, and Sameen Ahmed. “Association Between COVID-19 Infection Susceptibility and ABO Blood Groups and Rhesus Antigen : COVID-19 Infection Susceptibility and ABO Blood Groups”. Pakistan Journal of Health Sciences 4, no. 10 (October 31, 2023): 46–50. Accessed July 3, 2024. https://thejas.com.pk/index.php/pjhs/article/view/1031.