Maulidawati, Indah, Abdurrahim Rasyid Lubis, and Dharma Lindarto. “Renal Cortex Echogenicity Increases Degree of Retinopathy in Diabetes Mellitus”. Universa Medicina 35, no. 1 (May 3, 2016): 19–25. Accessed April 19, 2024. https://univmed.org/ejurnal/index.php/medicina/article/view/95.