S. D. Chhetri, M. Kunwar, A. Thapa, A. Shrestha, D. P. Sah, and K. Lamichhane, “Prevalence of Diabetic Retinopathy among Diabetic Patients Attending a Tertiary Care Hospital in Nepal: An Observational Study”, Med. J. APF Nepal, vol. 2, no. 1, pp. 68–73, Mar. 2026.