Hassan Liaquat Memon, Shabana Lakho, Anum Siddiqui, Murk Mujahid, Haris Ahmed Shah, Muhammad Yameen Mangan. “Association Between Proton Pump Inhibitor Use and Vitamin B12 Deficiency: A Cross-Sectional Study”. International Journal of Pharmacy Research & Technology (IJPRT), vol. 16, no. 2, Oct. 2026, pp. 6670-81, https://www.ijprt.org/index.php/pub/article/view/3383.