[Endoscopy of esophagus, ventricle and duodenum (gastroscopy)].
D000075202:Contraindications; D004384:Duodenoscopy / Q000379:methods / Q000592:standards*; D005387:Finland; D005767:Gastrointestinal Diseases / Q000175:diagnosis; D005773:Gastroscopy / Q000379:methods / Q000592:standards*; D006801:Humans