D. Santha Rao. 2015. “A Study of Serum Magnesium Levels in Patients Suffering from Diabetic Retinopathy”. World Journal of Pharmaceutical Sciences 3 (12):2504-6. https://wjpsonline.com/index.php/wjps/article/view/study-serum-magnesium-patients-suffering-diabetic-retinopathy.