Ibrahim, M. (2017) “Impact of Age, Duration and Control of Diabetes on Risk of Diabetic Retinopathy among Sudanese Diabetic Patients in Khartoum, Sudan- 2016: Hospital based Cross-Sectional study”, International Journal of Sciences: Basic and Applied Research (IJSBAR), 33(1), pp. 68–75. Available at: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/7107 (Accessed: 12 September 2025).