* Associate Professor of Clinical Anesthesia, Stanford University Medical School, Stanford, California 94305.
† Senior Anesthetist, Department of Anesthesia, Oulu University.
‡ Professor and Chairman, Department of Anesthesia, Oulu University.
§ Senior Obstetrician, Department of Obstetrics and Gynecology, Oulu University.
¶ Resident Obstetrician, Department of Obstetrics and Gynecology, Oulu University.
** Master of Science, Department of Clinical Chemistry, Oulu University.