A., Gomathi, and Keerthiga K. “Prevalence of Vitamin B12 Deficiency in Type 2 Diabetes Mellitus Patients on Metformin Therapy in a Tertiary Care Hospital”. International Journal of Basic & Clinical Pharmacology 9, no. 12 (November 25, 2020): 1888–1891. Accessed October 21, 2025. https://www.ijbcp.com/index.php/ijbcp/article/view/4471.