W. Trautman

Comparison of three solutions of ropivacaine/fentanyl for postoperative patient-controlled epidural analgesia.

Spencer S. Liu, R. Carpenter, S. Liu, 1999, Anesthesiology.

Comparison of Lidocaine and Saline for Epidural Top-Up During Combined Spinal-Epidural Anesthesia in Volunteers

D. Kopacz, Spencer S. Liu, W. Trautman, 1997, Anesthesia and analgesia.

Dose-response effects of spinal neostigmine added to bupivacaine spinal anesthesia in volunteers.

S. Liu, P. S. Hodgson, J. Moore, 1999, Anesthesiology.