Gundu, Veeranarayana, and Venkata Subrahmanyam Chintha. 2021. “A Cross Sectional Study to Estimate the Prevalence of Vitamin B12 Deficiency Among Type 2 Diabetes Cases on Metformin Therapy: A One Year Study”. International Journal of Advances in Medicine 8 (5):657-61. https://doi.org/10.18203/2349-3933.ijam20211471.