NARAYAN, R.; SINGH, S.; SINGH, O. P. A study of pattern of vitamin D deficiency in newborns with reference to its gestational age and birth weight. International Journal of Contemporary Pediatrics, [S. l.], v. 7, n. 3, p. 582–587, 2020. DOI: 10.18203/2349-3291.ijcp20200683. Disponível em: https://www.ijpediatrics.com/index.php/ijcp/article/view/3068. Acesso em: 6 nov. 2025.