1. Associate Professor of Anesthesia, Katholieke Universiteit Leuven
2. Resident, Department of Anesthesiology, Katholieke Universiteit Leuven.
3. Professor of Anesthesia and Chairman of the Department of Anesthesiology, University Hospitals, Katholieke Universiteit Leuven.
4. Professor of Anesthesia, University of Texas Southwestern Medical Center, Dallas, Texas.