Rheumatoid spondylitis. Clinical and laboratory study of 149 cases compared with 182 cases of rheumatoid arthritis.
D000844:Ankylosis; D001168:Arthritis; D001172:Arthritis, Rheumatoid; D006801:Humans; D013166:Spondylitis; D013167:Spondylitis, Ankylosing
ARTHRITIS, RHEUMATOID; SPONDYLITIS, ANKYLOSING