1. Department of Intensive Care, University Medical Center Utrecht, Utrecht, The Netherlands
2. Department of Cardiology, University Medical Center Utrecht, Utrecht, The Netherlands
3. Department of Cardioanesthesiology, University Medical Center Utrecht, Utrecht, The Netherlands
4. Cardiovascular and Respiratory Physiology Group, TechMed Centre, Faculty of Science and Technology, University of Twente, Enschede, The Netherlands
5. Departments of Intensive Care and Cardiology, Erasmus Medical Center, Rotterdam, The Netherlands