title: Upper gastrointestinal endoscopy without prior sedation.
authors.forename: S
authors.initials: S
authors.lastname: Sahm
authors.forename: H
authors.initials: H
authors.lastname: Dancygier
mesh_terms: D005773:Gastroscopy / Q000379:methods*; D006801:Humans; D006993:Hypnotics and Sedatives / Q000008:administration & dosage*; D015588:Observer Variation; D011292:Premedication; D011446:Prospective Studies
chemical_list: D006993:Hypnotics and Sedatives