Pernicious anemia.
D000752:Anemia, Pernicious / Q000178:diet therapy / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D007501:Iron / Q000627:therapeutic use; D014481:United States; D014805:Vitamin B 12 / Q000627:therapeutic use
D007501:Iron; D014805:Vitamin B 12