A Community-Based Randomized Controlled Trial on Weekly Vitamin D₃ Supplementation for Prevention of Seasonal Respiratory Illness in Transit Workers. Link Medical Journal, [S. l.], v. 3, n. 2, p. 1–8, 2025. DOI: 10.61919/7jcnf569. Disponível em: https://linkmjhcr.com/index.php/lmj/article/view/116. Acesso em: 29 apr. 2026.