KHAWAR, Nadeem; YOUNAS, Muhammad. Vitamin A Status and Persistent Diarrhea in Children under Five. Journal of Postgraduate Medical Institute, [S. l.], v. 12, n. 2, 2011. Disponível em: https://www.jpmi.org.pk/index.php/jpmi/article/view/623. Acesso em: 10 nov. 2025.