1. Resident, Department of Anesthesiology, University Hospital, Leiden
2. Associate Professor of Physiology, Department of Physiology, University of Leiden
3. Technical Assistant, Department of Physiology, University of Leiden
4. Professor of Anesthesiology and Chairman, Department of Anesthesiology, University Hospital Leiden
5. Professor of Anesthesiology, Department of Anesthesiology, University Hospital Leiden