1. Research Fellow, Department of Anesthesia.
2. Associate Research Biochemist.
3. Assistant Research Chemist.
4. Assistant Professor.
5. Visiting Research Fellow, Department of Anesthesia, University of Innsbruck, Austria.
6. Professor and Head of the Research Group of the Institutes for Experimental Anesthesiology and Clinical Pharmacology, University of Groningen, Groningen, The Netherlands.
7. Professor and Chairman, Department of Anesthesia; Professor of Pharmacology.