Cassinadane, Ananda Vayaravel, Ramesh Ramaswamy, Radhika Govindarajan, and Abu Raghavan Srinivasan. 2018. “A Genetic Perspective of Metformin Induced Vitamin B12 Deficiency in Type 2 Diabetes Mellitus Patients”. Asian Journal of Medical Sciences 9 (1):11-14. https://nepjol.info/index.php/AJMS/article/view/18723.