Vitamin D deficiency prevalence among healthy term infants at the age of 4–6 months: A cross-sectional observational study from tertiary care hospital setting. Indian Journal of Child Health, [S. l.], v. 7, n. 12, p. 471–476, 2021. DOI: 10.32677/IJCH.2020.v07.i12.001. Disponível em: https://mansapublishers.com/index.php/ijch/article/view/2673.. Acesso em: 9 apr. 2025.