Maastricht University - Centre for Heart Failure Research, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University - Centre for Heart Failure Research, Cardiovascular Research Institute Maastricht (CARIM), University Medical Center Hamburg- Eppendorf - Department of Intensive Care Medicine, Johannes Kepler University Linz, University Hospital 12 de Octubre, Central Lisbon Hospital Center, Helios Klinikum Erfurt, Ministry of Interior in Warsaw - Central Clinical Hospital, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Karolinska Institutet - ECMO Centre Karolinska, NHS Foundation Trust - Royal Papworth Hospital, Centro Hospitalar Universitário de Lisboa Central - Medical Emergency Unit, Sapienza University of Rome, University of Pittsburgh - Instituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione (ISMETT), Royal Brompton Hospital - Department of Anaesthesia and Critical Care, Goethe University Frankfurt, Heinrich Heine University Dusseldorf, University of Freiburg - University Hospital of Freiburg, University of Ostrava - University Hospital Ostrava, KU Leuven, University of Bern, North Estonian Regional Hospital Cancer Centre, Medical University of Vienna, Istanbul University - Istanbul University-Cerrahpasa, Rambam Medical Center, 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 and Maastricht University Medical Center - ECLS Centrum

Maastricht University Medical Center - ECLS Centrum, 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 - Centre for Heart Failure Research, Cardiovascular Research Institute Maastricht (CARIM), Hôpitaux de Paris (AP-HP) - Hôpital Henri Mondor, Université Libre de Bruxelles (ULB) - Department of Intensive Care, Guy's and St Thomas' NHS Foundation Trust, Maastricht University - Centre for Heart Failure Research, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University - Care and Public Health Research Institute (CAPHRI), Maastricht University - Medical Center, Maastricht University - Medical Center, Paracelsus Medical University Nuremberg - Department of Respiratory Medicine, Allergology and Sleep Medicine, Medical University of Vienna, Fondazione IRCCS Policlinico San Matteo - S.C.AR2-Cardiothoracic Anesthesia and Intensive Care, IRCCS, Karolinska Institutet - ECMO Centre Karolinska, NHS Foundation Trust - Royal Papworth Hospital, Rambam Medical Center, Chaim Sheba Medical Center, Università Vita-Salute San Raffaele - IRCCS Ospedale San Raffaele, University of Turin - Department of Surgical Sciences, Arnaud de Villeneuve Hospital - Department of Anaesthesiology and Critical Care Medicine, Ospedali Riuniti di Bergamo, Royal Brompton Hospital - Department of Anaesthesia and Critical Care, The University of Manchester - Manchester University NHS Foundation Trust, University Hospital Zurich, Heinrich Heine University Dusseldorf, University of Freiburg - University Heart Center Freiburg-Bad Krozingen (UHZ), University of Freiburg - University Hospital of Freiburg, University of Münster - University Hospital Muenster, KU Leuven, Hospices Civils de Lyon - Hôpital Cardiologique Louis Pradel, Ministry of Interior in Warsaw - Central Clinical Hospital, University of Copenhagen - Copenhagen University Hospital, Medical University of Vienna, Centro Hospitalar S. Joao, Central Lisbon Hospital Center, Novosibirsk State University, Istanbul University - Istanbul University-Cerrahpasa, Hospital Universitario Ramón y Cajal - Department of Intensive Care, affiliation not provided to SSRN, Government of the United Kingdom - Barts Health NHS Trust, University of Leiden, Pediatric Hospital Bambino Gesù, German Heart Centre Munich, Università di Parma, Royal Hospital for Children, Birmingham Women's Hospital, 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 and General University Hospital - 2nd Department of Internal Cardiovascular Medicine

Interdisciplinary COVID-19-Center, University Medical Centre, Saarland University, Department of Anaesthesiology and Intensive Care Medicine, District Hospital Bergstrasse, University Hospital Heidelberg, Karolinska Institutet - ECMO Centre Karolinska, Department of Medicine III (Interdisciplinary Medical Intensive Care), Medical Center – University of Freiburg, Paracelsus Medical University Nuremberg - Department of Respiratory Medicine, Allergology and Sleep Medicine, Interdisciplinary COVID-19-Center, University Medical Centre, Saarland University, Interdisciplinary COVID-19-Center, University Medical Centre, Saarland University, Interdisciplinary COVID-19-Center, University Medical Centre, Saarland University, Interdisciplinary COVID-19-Center, University Medical Centre, Saarland University, Interdisciplinary COVID-19-Center, University Medical Centre, Saarland University, Ulm University - Ulm University Hospital, Department of Medicine III (Interdisciplinary Medical Intensive Care), Medical Center – University of Freiburg, Interdisciplinary COVID-19-Center, University Medical Centre, Saarland University, Saarland University, Université Libre de Bruxelles (ULB) - Department of Intensive Care, University of Goettingen (Gottingen) - Clinic of Anaesthesiology, Maastricht University Medical Center - ECLS Centrum, General University Hospital - 2nd Department of Internal Cardiovascular Medicine, Department of Anaesthesiology and Critical Care Medicine, Campus Kassel of the University of Southampton, Saarland University - Department of Internal Medicine V – Pneumology, Allergology and Intensive Care Medicine and Independent

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and General University Hospital - 2nd Department of Internal Cardiovascular Medicine

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

Charles University, affiliation not provided to SSRN, affiliation not provided to SSRN, Charles University, Charles University, Charles University, Charles University, Charles University, affiliation not provided to SSRN and General University Hospital - 2nd Department of Internal Cardiovascular Medicine

affiliation not provided to SSRN, affiliation not provided to SSRN, Lund University - Department of Clinical Sciences, General University Hospital - 2nd Department of Internal Cardiovascular Medicine, affiliation not provided to SSRN and affiliation not provided to SSRN