title: The natural history of ankylosing spondylitis.
authors.forename: H
authors.initials: H
authors.lastname: Little
mesh_terms: D000293:Adolescent; D000328:Adult; D001416:Back Pain / Q000209:etiology / Q000628:therapy; D002648:Child; D015235:HLA-B Antigens / Q000032:analysis; D015796:HLA-B27 Antigen; D006622:Hip Prosthesis; D006801:Humans; D013167:Spondylitis, Ankylosing / Q000276:immunology / Q000401:mortality / Q000503:physiopathology*
chemical_list: D015235:HLA-B Antigens; D015796:HLA-B27 Antigen