Vitamin A deficiency as a factor in nutritional anemia.
D000740:Anemia / Q000209:etiology*; D000747:Anemia, Hypochromic / Q000209:etiology*; D000818:Animals; D002648:Child; D002675:Child, Preschool; D006410:Hematopoiesis; D006801:Humans; D007501:Iron / Q000378:metabolism; D014801:Vitamin A / Q000097:blood / Q000627:therapeutic use; D014802:Vitamin A Deficiency / Q000150:complications*
D014801:Vitamin A; D007501:Iron