Maastricht University - Centre for Heart Failure Research, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University - Centre for Heart Failure Research, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University - Centre for Heart Failure Research, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University - Care and Public Health Research Institute (CAPHRI), Maastricht University - Centre for Heart Failure Research, Cardiovascular Research Institute Maastricht (CARIM), University Medical Center Hamburg- Eppendorf - Department of Intensive Care Medicine, NHS Foundation Trust - Royal Papworth Hospital, Université Libre de Bruxelles (ULB) - Department of Intensive Care, Imperial College London - Section of Anaesthetics, Pain Management and Intensive Care, University of Pittsburgh - Instituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione (ISMETT), Heinrich Heine University Dusseldorf, Hôpitaux de Paris (AP-HP) - Hôpital Henri Mondor, University of Freiburg - University Hospital of Freiburg, Central Lisbon Hospital Center, University Hospital Zurich, North Estonian Regional Hospital, KU Leuven, Medical University of Vienna, Istanbul University - Istanbul University-Cerrahpasa, Technion-Israel Institute of Technology - Rambam Health Care Campus, Guy's and St Thomas' NHS Foundation Trust, Hospital Universitari Vall d’Hebron - Department of Intensive Care, University Hospital Regensburg - Department of Internal Medicine II, General University Hospital - 2nd Department of Internal Cardiovascular Medicine, Maastricht University Medical Center - ECLS Centrum and Independent