Siddappa, Sudeep Navule, Kavitha Chikknayakanahalli Venugopal, Pavana Acharya, and Tintu Susan Joy. “Retinopathy of Prematurity - Intersibling Divergence of Risk Factors Among Twins”. International Journal of Clinical and Experimental Ophthalmology 4, no. 1 (February 19, 2020): 009–011. Accessed October 3, 2025. https://www.clinophthaljournal.com/ijceo/article/view/ijceo-aid1026.