Familial spondylitis.
D003093:Colitis, Ulcerative / Q000150:complications / Q000235:genetics; D006801:Humans; D008297:Male; D008875:Middle Aged; D010375:Pedigree; D011565:Psoriasis / Q000150:complications; D013167:Spondylitis, Ankylosing / Q000150:complications / Q000235:genetics*