Bhuiyan, A. N. H., M. Mannan, S. K. Dey, N. Choudhury, M. Shameem, and M. Shahidullah. “Frequency and Risk Factors for Retinopathy of Prematurity in Very Low Birth Weight Infants in NICU, BSMMU”. TAJ: Journal of Teachers Association, vol. 32, no. 1, Aug. 2019, pp. 54-61, doi:10.3329/taj.v32i1.42736.