حنان على الحداد, and أمحمد محمد بلعيد. “The Effect of Metformin Use on Vitamin B12 Level in Patients With Type 2 Diabetes Mellitus in Brack”. Journal of Pure & Applied Sciences 22, no. 4 (June 17, 2023): 16–20. Accessed December 4, 2024. https://sebhau.edu.ly/journal/jopas/article/view/3015.