Serum vitamin A levels among malnourished children aged 6 - 59 months in Zaria. NIGERIAN JOURNAL OF PAEDIATRICS, [S. l.], v. 44, n. 3, p. 152–156, 2024. Disponível em: http://njpaediatrics.com/index.php/njp/article/view/193.. Acesso em: 26 may. 2026.