Hamzah, Twana Mahmood, and Bushra Mohammed Ali. “Vitamin B12 Deficiency Among a Sample of Type 2 Diabetic Patients on Metformin in Erbil-City”. AMJ (Advanced Medical Journal) 5, no. 1 (May 29, 2023): 13–18. Accessed April 11, 2025. https://amj.khcms.edu.krd/index.php/main/article/view/220.