Sandler, A N Update on postoperative pain management. [electronic resource] - Canadian journal of anaesthesia = Journal canadien d'anesthesie May 1992 - R53-9 p. digital Publication Type: Journal Article; Review ISSN: 0832-610X Subjects--Topical Terms: Analgesia, Patient-ControlledAnalgesics, Opioid--administration & dosageHumansNerve BlockPain, Postoperative--prevention & control