Subban, S., A. Rahman, A. Sayeed, F. Hasin, R. Karim, and L. Ali. “The Role of Duration of Diabetes in the Development of Diabetic Retinopathy in Young Diabetic Patients in Bangladesh”. Journal of Bangladesh College of Physicians and Surgeons, vol. 27, no. 3, Jan. 2010, pp. 133-8, doi:10.3329/jbcps.v27i3.4289.