Bedi, N., A. O. Gulati, and G. V. Devasthali. “Correlative Study of Diabetic Retinopathy in Type 2 Diabetes Mellitus With Haemoglobin A1c, Duration of Diabetes and Modifiable Risk Factors: Smoking, Alcohol and BMI in Adult Population Attending a Tertiary Care Hospital”. International Journal of Research in Medical Sciences, vol. 9, no. 10, Sept. 2021, pp. 2949-53, doi:10.18203/2320-6012.ijrms20213663.