1. Assistant Professor of Anesthesia, Department of Anesthesia, Northwestern University Medical School and Parker B. Francis Investigator in Anesthesiology for 1986–1988.
2. Visiting Scientist, Department of Clinical Pharmacology, Karolinska Institute, Huddinge Hospital, Huddinge, Sweden; current address: Institute of Pharmacology, University of Messina, Italy.
3. Visiting Scientist, Department of Clinical Pharmacology, Karolinska Institute, Huddinge Hospital, Huddinge, Sweden; current address: A. Z. Gent, Department of Internal Medicine, Gent, Belgium.
4. Associate Professor of Clinical Pharmacology, Department of Clinical Pharmacology, Karolinska Institute, Huddinge Hospital, Huddinge, Sweden.