title: [Vitamin A avitaminosis: a colective nutritional problem in Chile].
mesh_terms: D002677:Chile; D006801:Humans; D009748:Nutrition Disorders / Q000453:epidemiology*; D012189:Retrospective Studies; D014801:Vitamin A / Q000600:supply & distribution; D014802:Vitamin A Deficiency / Q000453:epidemiology*
chemical_list: D014801:Vitamin A
vernacular_title: La hipovitaminosis A: un problema nutricional colectivo en Chile.