title: Patient-controlled analgesia: a comparison of intravenous versus subcutaneous hydromorphone.
authors: Department of Anesthesia, Stanford University, California.
authors: M L
authors: ML
authors: Urquhart
authors: K
authors: K
authors: Klapp
authors: P F
authors: PF
authors: White
mesh_terms: D000698:Analgesia / Q000379:methods*; D005069:Evaluation Studies as Topic; D006801:Humans; D004091:Hydromorphone / Q000008:administration & dosage* / Q000009:adverse effects; D007275:Injections, Intravenous; D007279:Injections, Subcutaneous; D010147:Pain Measurement; D010149:Postoperative Pain / Q000188:drug therapy; D012646:Self Administration; D013997:Time Factors
chemical_list: D004091:Hydromorphone