Kiran, M.D. and Naik, B.N. 2017. A clinical study to determine metformin as a cause of serum vitamin B12 decrease and effect of combination of metformin and mecobalamin on serum vitamin B12 levels in type 2 diabetics. International Journal of Basic & Clinical Pharmacology. 6, 5 (Apr. 2017), 1066–1072. DOI:https://doi.org/10.18203/2319-2003.ijbcp20171498.