Department of Cardiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary. Department of Clinical Sciences and Community Health, Centro Cardiologico Monzino, IRCCS, Milan, Italy. Department of Surgery, School of Medicine, University of Santiago de Compostela, Santiago de Compostela, Spain. Institute of Anaesthesiology, University Hospital of Zurich, Zurich, Switzerland. Department of Anaesthesiology, University Hospital, Ghent, Belgium. Cardiology Department, Centro Hospitalar Universitario Lisboa Norte, CCUI, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal. Department of Anaesthesiology, Perioperative Medicine and Intensive Care, Masaryk Hospital, J.E. Purkinje University, Usti nad Labem, Czech Republic. Heart Diseases Institute, Hospital Universitari de Bellvitge, Barcelona, Spain. Complexo Hospitalario Universitario A Coruña (CHUAC), CIBERCV, Instituto de Investigacion Biomedica A Coruña (INIBIC), Universidad de a Coruña (UDC), La Coruña, Spain. Heart Failure and Transplant Program, Cardiology Department, University Hospital 12 Octubre, Madrid, Spain. Department of Cardiac Intensive Care, Petrovskii National Research Centre of Surgery, Sechenov University, Moscow, Russia. Department of Cardiology, Medical School, University of Cyprus, Nicosia, Cyprus. Department of Cardiovascular, Respiratory, Nephrology, Anaesthesiology and Geriatric Sciences, La Sapienza University of Rome, Rome, Italy. Heart Failure Clinic, São Francisco Xavier Hospital, CHLO, Lisbon, Portugal. Department of Anaesthesiology and Intensive Care Medicine, Division of Anaesthesiology for Cardiovascular Surgery and Intensive Care Medicine, Medical University of Graz, Graz, Austria. Struttura Complessa di Anestesia 1, Policlinico di Modena, Modena, Italy. Dipartimento di Anestesia e Terapie Intensive, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy. Emergency Medicine, Meilahti Central University Hospital, University of Helsinki, Helsinki, Finland. Department of Anaesthesiology and Intensive Care Medicine, University of Lübeck, Lübeck, Germany. Department of Intensive Care, Hôpital Erasme, Brussels, Belgium. Department of Intensive Care Medicine, Amsterdam UMC, Amsterdam, the Netherlands. Department of Cardiology, Oslo University Hospital Ullevaal, Oslo, Norway. Department of Anaesthesiology, Reanimatology and Intensive Care, University Hospital Centre, Zagreb, Croatia. Departments of Cardiology and Transplantation, Sahlgrenska University Hospital, Gothenburg, Sweden. Intensive Care Unit, National Health Service, Leeds, United Kingdom. Global Medical Affairs, R&D, Orion Pharma, Espoo, Finland. Department of Cardiology and Internal Medicine, Nicolaus Copernicus University, Torun, Poland. Intensive Care Department, Consorci Sanitari Integral, University of Barcelona, Barcelona, Spain. Lomonosov Moscow State University Medical Centre, Moscow, Russia. Department of Anaesthesiology and Critical Care Medicine, AP-HP, Saint Louis and Lariboisière University Hospitals, Paris, France. Sydäntutkimussäätiö, Helsinki, Finland. Department of Cardiology, Niguarda Ca'Granda Hospital, Milan, Italy. MTA-SZTE Research Group of Cardiovascular Pharmacology, Hungarian Academy of Sciences, University of Szeged, Szeged, Hungary. Second Department of Cardiology, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece. Emergency Cardiology Department, National Scientific Centre MD Strazhesko Institute of Cardiology, Kiev, Ukraine. Department of Cardiology, North Estonia Medical Centre, Tallinn, Estonia. Department of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Innsbruck, Austria. Klinik für Innere Medizin III, Kardiologie, Universitätsklinikum Schleswig-Holstein, Kiel, Germany. Department of Anaesthesiology and Intensive Care, Sahlgrenska University Hospital, Gothenburg, Sweden. Department of Anaesthesiology and Intensive Care Medicine, Cardiothoracic Anaesthesiology and Intensive Care, Institute for Clinical and Experimental Medicine, Prague, Czech Republic. Department of Medicine, Spittal Limmattal, Schlieren, Switzerland. Statistical Services, R&D, Orion Pharma, Espoo, Finland. Medizinische Klinik II, Klinikum Weiden, Teaching Hospital of University of Regensburg, Weiden, Germany. Department of Anaesthesiology and Intensive Care Medicine, Medical University of Graz, Graz, Austria. Anaesthesia and Intensive Care Division, San Camillo-Forlanini Hospital, Rome, Italy. Department of Cardiology, Campus Virchow Klinikum, Charité-University Medicine Berlin, Berlin, Germany. Institute of Medical Sciences, Uppsala University, Uppsala, Sweden. Department of Cardiology, Myokardiale Energetik und Metabolismus Research Unit, Medical University of Graz, Graz, Austria. Department of Cardiology, Advanced Heart Failure and Transplantation Centre, University Clinical Centre, Ljubljana, Slovenia. Critical Care Proprietary Products, Orion Pharma, Espoo, Finland.