Butt, Anjum Rashid, Muhammad Naveed Akhtar, Muhammad Tayyib, and Muhamad Farooq. “ABO and Rh Blood Groups in Patients With Hypertension: Association With Secretor Status”. Annals of King Edward Medical University 9, no. 3 (June 28, 2016). Accessed January 15, 2025. https://annalskemu.org/journal/index.php/annals/article/view/1335.