Prevalence of Vitamin D Deficiency and Insufficiency Across Trimesters of Pregnancy in Maiduguri, Nigeria: A Cross-Sectional Study. AJBR [Internet]. 31. leden 2021 [citován 6. červen 2026];24(1):53-7. Dostupné z: https://ojshostng.com/index.php/ajbr/article/view/1689