1. Staff Anesthesiologist, Department of Anesthesia and Intensive Care, University Hospital Giessen-Marburg, Marburg, Germany.
2. Postdoctoral Fellow, Department of Anesthesiology, Section of Experimental Anesthesiology, University of Tuebingen, Tuebingen, Germany.
3. Professor, Department of Anesthesia and Intensive Care, University Hospital Giessen-Marburg.
4. Associate Professo of Anesthesia, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts.