« Prevalence of Vitamin D Deficiency and Insufficiency Across Trimesters of Pregnancy in Maiduguri, Nigeria: A Cross-Sectional Study ». African Journal of Biomedical Research, vol. 24, nᵒ 1, janvier 2021, p. 53-57, https://ojshostng.com/index.php/ajbr/article/view/1689.