title: Epidemiology of B27-associated diseases.
mesh_terms: D001168:Arthritis / Q000453:epidemiology / Q000235:genetics*; D016918:Arthritis, Reactive / Q000453:epidemiology / Q000235:genetics*; D003092:Colitis / Q000453:epidemiology / Q000235:genetics; D004198:Disease Susceptibility; D005260:Female; D006680:HLA Antigens / Q000032:analysis*; D015796:HLA-B27 Antigen; D006801:Humans; D008297:Male; D008875:Middle Aged; D011565:Psoriasis / Q000453:epidemiology / Q000235:genetics*; D012306:Risk; D013167:Spondylitis, Ankylosing / Q000453:epidemiology / Q000235:genetics*
chemical_list: D006680:HLA Antigens; D015796:HLA-B27 Antigen