Vitamin A deficiency: a public health problem in eastern Sudan.
D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012424:Rural Population; D013397:Sudan; D014802:Vitamin A Deficiency / Q000453:epidemiology*