title: Coexistence of ankylosing spondylitis and rheumatoid arthritis in a single family.
mesh_terms: D000328:Adult; D001172:Arthritis, Rheumatoid / Q000150:complications / Q000235:genetics*; D005260:Female; D006680:HLA Antigens / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D013167:Spondylitis, Ankylosing / Q000150:complications / Q000235:genetics*
chemical_list: D006680:HLA Antigens