Study on Association Between Severity of Childhood Asthma and Serum Vitamin D Levels in Children 1 to 12 Years of Age. Medical Forum Monthly, [S. l.], v. 32, n. 6, 2024. Disponível em: https://medicalforummonthly.com/index.php/mfm/article/view/1692.. Acesso em: 16 nov. 2025.