Familial factors in peptic ulcer. II. Family structure in duodenal ulcer.
D000328:Adult; D000367:Age Factors; D001722:Birth Order; D004381:Duodenal Ulcer / Q000235:genetics*; D005163:Factor Analysis, Statistical; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D008404:Massachusetts; D008423:Maternal Age; D008875:Middle Aged; D009790:Occupations; D010437:Peptic Ulcer / Q000209:etiology / Q000235:genetics*; D010820:Physicians; D012067:Religion; D013315:Stress, Psychological