Hassabi, Mohammad, Maryam Fakhri, Shahin Salehi, Amir Hosein Abedi Yekta, Mehrshad Poursaeid Esfahani, Parviz Malekifar, and Fatemeh Javadi. 2021. “Association Between Physical Activity and Severity of Diabetic Retinopathy in Patients With Diabetes Mellitus”. Researcher Bulletin of Medical Sciences 25 (1), e8. https://journals.sbmu.ac.ir/index.php/rbms/article/view/34669.