KAKAR, Dr. Shamsuddin; UDIN, Dr. Jamal; JAHAN, Dr. Nazish; ARIF, Dr. Muhammad; YASMEEN, Dr. Salma; AMEENULLAH, Dr. Association between Vitamin D Deficiency and Recurrent Respiratory Tract Infections in Children. Adolescência e Saúde, [S. l.], p. 1940–1947, 2026. Disponível em: https://adolescenciaesaude.com/index.php/aes/article/view/2723. Acesso em: 19 oct. 2026.