1. Cardiovascular Research Unit, Luxembourg Institute of Health, Strassen L-1445, Luxembourg
2. Department of Cardiology, Clinical Sciences, Lund University and Skane University Hospital, Lund SE-221 85, Sweden
3. Medical and Health Department, National Fire and Rescue Corps, Luxembourg L-2557, Luxembourg
4. Department of Cardiology B, The Heart Centre, Rigshospitalet University Hospital, Copenhagen 2100, Denmark
5. Department of Intensive Care, University Hospital of Wales, Cardiff CF144XW, UK
6. Department of Intensive Care, Leeuwarden Medical Centrum, Leeuwarden 8934, Netherlands
7. Department of Anesthesia and Intensive Care, Clinical Sciences, Lund University and Skane University Hospital, Lund SE-221 85, Sweden
8. Department of Anesthesia and Intensive Care, Clinical Sciences, Lund University and Helsingborg Hospital, Lund SE-25187, Sweden