title: Effect of preoperative opioid administration on postoperative pain.
authors.forename: J
authors.initials: J
authors.lastname: Katz
authors.forename: B P
authors.initials: BP
authors.lastname: Kavanagh
authors.forename: A N
authors.initials: AN
authors.lastname: Sandler
mesh_terms: D015760:Alfentanil / Q000627:therapeutic use*; D006801:Humans; D009407:Nerve Block; D010149:Postoperative Pain / Q000517:prevention & control*; D011292:Premedication
chemical_list: D015760:Alfentanil