Association of Metformin Use With Deficiency of Vitamin B- 12 And Folate And Peripheral Neuropathy In Adults With Type 2 Diabetes Mellitus. - Siddiqi, Fuad Ahmad; Yaseen, Laila; Ashraf, Amna; Siddiqi, Kanaz Ahmad; Ashraf, Shahzad; Khan, Imran (Journal of Rawalpindi Medical College, 2026)