1. Department of Medicine, Academic Medical Centre, University of Amsterdam, The Netherlands
2. Department of Intensive Care, Academic Medical Centre, University of Amsterdam, The Netherlands
3. Department of Physiology, Academic Medical Centre, University of Amsterdam, The Netherlands
4. Department of Medicine, Hunter Holmes McGuire Department of Veterans, Affairs Medical Center and Medical College of Virginia, Richmond, Virginia, U.S.A.
5. Department of Physiology, Hunter Holmes McGuire Department of Veterans, Affairs Medical Center and Medical College of Virginia, Richmond, Virginia, U.S.A.