A. Gupta, M. Kumar, S. Tripathi, K. Singh, V. K. Singh, and T. Anand, “Selenium levels in hospitalized preterm very low birth weight neonates in North India”, Indian J Child Health, vol. 6, no. 1, pp. 35–38, Jan. 2019, doi: 10.32677/IJCH.2019.v06.i01.008.