Anaemia in rheumatoid arthritis.
D000740:Anemia / Q000209:etiology*; D000748:Anemia, Macrocytic / Q000209:etiology; D000752:Anemia, Pernicious / Q000150:complications; D001172:Arthritis, Rheumatoid / Q000150:complications*; D006801:Humans; D007501:Iron / Q000097:blood
D007501:Iron