Vitamin D Deficiency in Infertile Males with Oligospermia: A Cross-sectional Comparative Study. Journal of Bangladesh College of Physicians and Surgeons, [S. l.], v. 40, n. 4, p. 253–256, 2022. DOI: 10.3329/jbcps.v40i4.61877. Disponível em: https://www.banglajol.info/index.php/JBCPS/article/view/61877. Acesso em: 3 jul. 2026.