1. Department of Medicine, South-Karelia Central Hospital, University of Helsinki, Lappeenranta, Etelä-Karjala, Finland
2. Heart and Lung Center, Helsinki University Hospital, Helsinki, Uusimaa, Finland
3. Research Unit of Surgery, Anesthesia and Intensive Care, University of Oulu, Oulu, Finland
4. Divisions of Neurosciences, Critical Care and Cardiac Surgery, Departments of Neurology, Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
5. Puerta de Hierro University Hospital, Madrid, Spain
6. Anesthesia and Intensive Care Unit, Centro Cardiologico Monzino, Milan, Lombardy, Italy
7. Anesthesia and Intensive Care Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
8. Adult Cardiac Surgery, Prince Sultan Cardiac Center, Riyadh, Saudi Arabia
9. Cardiothoracic Surgery Department, Tanta University, Tanta, Gharbia Governorate, Egypt
10. Intensive Care Department, Prince Sultan Cardiac Center, Riyadh, Saudi Arabia
11. Cardiac Surgical Intensive Care Department, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
12. Critical Care Medicine Department, Cairo University, Cairo, Egypt
13. Department of Cardiothoracic Surgery, University Hospital Cologne, Cologne, Germany
14. Second Department of Anesthesia, Vilnius University Hospital Santaros Klinikos, Vilnius, Lithuania
15. Clinic of Emergency Medicine, Medical Faculty, Vilnius University, Vilnius, Lithuania
16. Cardiology Department, University Hospital of Salamanca, Instituto de Investigación Biomédica de Salamanca, Salamanca, Castilla y León, Spain
17. CIBER-CV Instituto de Salud Carlos III, Madrid, Spain
18. Institute of Anesthesiology, University and University Hospital Zurich, Zurich, Switzerland
19. Department of Cardiac Surgery, Campus Biomedico, Rome, Lazio, Italy