title: Duodeno-gastric reflux. An endoscopic study.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004378:Duodenal Diseases / Q000175:diagnosis*; D005260:Female; D005336:Fiber Optic Technology; D005764:Gastroesophageal Reflux / Q000175:diagnosis*; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged