title: Alfentanil for sedation during colonoscopy.
authors.forename: T R
authors.initials: TR
authors.lastname: Hill
mesh_terms: D015760:Alfentanil; D000701:Analgesics, Opioid; D003113:Colonoscopy; D016292:Procedural Sedation / Q000379:methods*; D006801:Humans; D006993:Hypnotics and Sedatives; D008614:Meperidine; D008874:Midazolam
chemical_list: D000701:Analgesics, Opioid; D006993:Hypnotics and Sedatives; D015760:Alfentanil; D008614:Meperidine; D008874:Midazolam