[Use of tranquilizers in relief of postoperative pain].
D003975:Diazepam / Q000008:administration & dosage; D006801:Humans; D006919:Hydroxyzine / Q000008:administration & dosage; D008614:Meperidine / Q000008:administration & dosage; D010146:Pain / Q000188:drug therapy*; D011182:Postoperative Care; D014149:Tranquilizing Agents / Q000627:therapeutic use*
D014149:Tranquilizing Agents; D006919:Hydroxyzine; D008614:Meperidine; D003975:Diazepam