Further observations on the spondylitis of rheumatoid arthritis.
D001172:Arthritis, Rheumatoid / Q000150:complications*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D013166:Spondylitis / Q000209:etiology*; D013167:Spondylitis, Ankylosing / Q000175:diagnosis