Marie-Struempell arthritis in twins, complicated by the presence of duodenal ulcer.
D001168:Arthritis; D004194:Disease; D004200:Diseases in Twins; D004381:Duodenal Ulcer; D006801:Humans; D010437:Peptic Ulcer / Q000235:genetics*; D013166:Spondylitis; D013167:Spondylitis, Ankylosing / Q000235:genetics*; D014427:Twins
PEPTIC ULCER/genetics; SPONDYLITIS, ANKYLOSING/genetics; TWINS/diseases