Juvenile ankylosing spondylitis. Report of three cases.
D001171:Arthritis, Juvenile / Q000000981:diagnostic imaging; D002648:Child; D002675:Child, Preschool; D005081:Exercise Therapy; D006801:Humans; D008297:Male; D011859:Radiography; D012459:Salicylates / Q000627:therapeutic use; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000628:therapy
D012459:Salicylates