title: Patient-controlled analgesia.
authors.forename: M B
authors.initials: MB
authors.lastname: Smith
authors.forename: R J
authors.initials: RJ
authors.lastname: Elwood
mesh_terms: D000698:Analgesia; D001711:Biotransformation; D004315:Doxapram; D006801:Humans; D008614:Meperidine / Q000493:pharmacokinetics*
chemical_list: D004315:Doxapram; D008614:Meperidine