K. L. Kumar, A. T. A. Seeralar, and C. N. Kamalarathnam, “Retinopathy of prematurity in a tertiary care center: A study of prevalence, risk factors, and outcomes”, Indian J Child Health, vol. 4, no. 3, pp. 390–393, Sep. 2017, doi: 10.32677/IJCH.2017.v04.i03.028.