Ankylosing spondylitis: a two-year experience.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D005260:Female; D006680:HLA Antigens / Q000032:analysis*; D006801:Humans; D007494:Ireland; D008297:Male; D008875:Middle Aged; D013167:Spondylitis, Ankylosing / Q000276:immunology*
D006680:HLA Antigens