Saleemi, Akhtar, Mohammad Soraish, Abdul Salam, and Maha Gul Shabnam. 2025. “Prevalence and Clinical Predictors of Vitamin B12 Deficiency in Patients Receiving Long-Term Metformin Therapy”. Pakistan Journal of Healthcare Research 2 (2): 5-9. https://pjhr.com.pk/index.php/journal/article/view/36.