Relationship of HbA1c to Diabetic Retinopathy in Type 2 DM Patients at Haji Adam Malik General Hospital 2017-2018. Sumat. Med. J. [Internet]. 2021 Sep. 7 [cited 2026 Feb. 4];3(3). Available from: https://idjpcr.usu.ac.id/smj/article/view/3626