Affiliation: | M. Virkkilä, MD, PhD, T. Ali-Melkkilä, MD, PhD, Staff Anaesthesiologists, J. Kanto, MD, PhD, Professor of Anaesthesiology, H. Scheinin, MD, PhD, Anaesthesia Resident, Department of Anaesthesiology, University of Turku, FIN-20520 Turku, Finland, J. Turunen, MSc, Biostatistician, Orion-Farmos Pharmaceuticals, Farmos Research, P.O. Box 425, FIN-20101 Turku, Finland. |