Evaluation of the efficacy of programs for the control of severe xerophthalmia.
D002675:Child, Preschool; D005527:Food, Fortified; D006801:Humans; D009313:National Health Programs; D009749:Nutrition Surveys; D012306:Risk; D014801:Vitamin A / Q000627:therapeutic use; D014802:Vitamin A Deficiency / Q000517:prevention & control; D014985:Xerophthalmia / Q000517:prevention & control*
D014801:Vitamin A