title: Patterns of duodenitis: a retrospective study.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D004378:Duodenal Diseases / Q000175:diagnosis* / Q000473:pathology; D004724:Endoscopy; D005260:Female; D006801:Humans; D007249:Inflammation; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012737:Sex Factors