(Schricker) Visiting Assistant Professor.
(Klubien) Research Fellow.
(Carli) Professor and Chair.
Received from the Department of Anesthesia, McGill University, Montreal, Canada. Submitted for publication September 28, 1998. Accepted for publication February 3, 1999. Dr. T. Schricker was supported by a Research Operating Grant (Schr 623/1-1) from the Deutsche Forschungsgemeinschaft, Germany.
Address reprint requests to Dr. Carli: Department of Anesthesia, McGill University, Royal Victoria Hospital, 687 Pine Avenue West, Room F9.16, Montreal, Quebec, Canada H3A 1A1. Address electronic mail to: mdfc@musica.mcgill.ca