Side effects associated with epidural morphine/butorphanol/bupivicaine infusion versus epidural hydromorphone/bupivicaine infusion: Is there a difference?
Koh JL, Harrison RD, Leatherman IK, Schmitz ML. Side effects associated with epidural morphine/butorphanol/bupivicaine infusion versus epidural hydromorphone/bupivicaine infusion: Is there a difference?. Society for Pediatric Anesthesia and the American Academy of Pediatrics, Section on Anesthesiology.