title: High risk of sacroiliitis in HLA--B27-positive Pima Indian men.
mesh_terms: D000367:Age Factors; D000368:Aged; D001130:Arizona; D001168:Arthritis / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D005260:Female; D006680:HLA Antigens / Q000032:analysis*; D006801:Humans; D007198:Indians, North American; D008297:Male; D008875:Middle Aged; D012446:Sacroiliac Joint; D012737:Sex Factors
chemical_list: D006680:HLA Antigens