„Prevalence of Vitamin D Deficiency and Insufficiency Across Trimesters of Pregnancy in Maiduguri, Nigeria: A Cross-Sectional Study", AJBR, roč. 24, č. 1, s. 53–57, led. 2021, Viděno: 5. duben 2026. [Online]. Dostupné z: https://ojshostng.com/index.php/ajbr/article/view/1689