1. Department of Cardiology, Helsinki University Hospital, Helsinki, Finland
2. Cardiology Department, AHEPA University Hospital, Thessaloniki, Greece
3. Division of Cardiology, Medical University of Graz, Graz, Austria
4. Lomonosov Moscow State University Medical Centre, Moscow, Russia
5. Department of Anaesthesia and Intensive Care, INSERM UMR 942, Lariboisière Hospital, University of Paris, Paris, France
6. Division of Clinical Physiology, Department of Cardiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
7. Medizinische Klinik II, Klinikum Weiden, Akademisches Lehrkrankenhaus der Universität Regensburg, Regensburg, Germany
8. Orion Pharma, Critical Care Proprietary Products, PO Box 65, FIN-02101 Espoo, Finland
9. Second Cardiology Department and Heart Failure Unit, Attikon Teaching Hospital, Athens, Greece