S., L., and S. S. “Study of HbA1C Levels in Patients With Type 2 Diabetes Mellitus in Relation to Diabetic Retinopathy in Indian Population”. International Journal of Advances in Medicine, vol. 5, no. 6, Nov. 2018, pp. 1397-01, doi:10.18203/2349-3933.ijam20184686.