Common causes of anaemia in the elderly.
D000368:Aged; D000740:Anemia / Q000209:etiology*; D000744:Anemia, Hemolytic, Autoimmune / Q000209:etiology*; D000752:Anemia, Pernicious / Q000209:etiology*; D006470:Hemorrhage / Q000150:complications; D006801:Humans; D009369:Neoplasms / Q000150:complications*