“Prevalence of Vitamin D Deficiency and Insufficiency Across Trimesters of Pregnancy in Maiduguri, Nigeria: A Cross-Sectional Study”, AJBR, vol. 24, nº 1, p. 53–57, jan. 2021, Acesso em: 25º de abril de 2026. [Online]. Disponível em: https://ojshostng.com/index.php/ajbr/article/view/1689