title: Ankylosing spondylitis and auto-immunity.
mesh_terms: D001327:Autoimmune Diseases / Q000150:complications*; D004700:Endocrine System Diseases / Q000150:complications; D006801:Humans; D008297:Male; D008875:Middle Aged; D013167:Spondylitis, Ankylosing / Q000150:complications* / Q000276:immunology; D013272:Stomach Diseases / Q000150:complications