title: [A nosographic study of x-ray negative dyspepsia].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004381:Duodenal Ulcer / Q000000981:diagnostic imaging; D004415:Dyspepsia / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D013276:Stomach Ulcer / Q000000981:diagnostic imaging*
vernacular_title: En nosografisk undersøgelse af røontgennegativ dyspepsi