Saarland University - Department of Anaesthesiology, Intensive Care and Pain Therapy, Saarland University - Department of Anaesthesiology, Intensive Care and Pain Therapy, HELIOS Klinikum Aue, Klinikum Oldenburg, University Clinic of Anaesthesiology, Intensive Care, Emergency Medicine, Pain Therapy, Schleswig-Holstein University, Department of Anesthesiology and Intensive Care Medicine, Ulm University - Ulm University Hospital, Klinikum Saarbrücken, Department of Anesthesia and Intensive Care, University of Ljubljana - University Medical Centre Ljubljana, Klinikum Weiden, Medical Department, Johannes Gutenberg University Mainz - University Medical Center, Carl-Thiem-Hospital, Department of Anaesthesiology, Intensive Care Medicine and Palliative Care Medicine, University of Lubeck, Department of Anesthesiology and Intensive Care, Emden Hospital, Department of Anaesthesiology and Intensive Care Medicine, Ruhr University of Bochum, Department of Anaesthesiology and Intensive Care Medicine, Ruhr University of Bochum, Department of Anaesthesiology and Intensive Care Medicine and Karolinska Institutet

Ulm University - Ulm University Hospital, Saarland University - Department of Anaesthesiology, Intensive Care and Pain Therapy, HELIOS Klinikum Aue, Klinikum Oldenburg, Klinikum Emden, Wels General Hospital, Klinikum Saarbrücken, Department of Anesthesia and Intensive Care, Carl-Thiem-Hospital, Schleswig-Holstein University, Department of Anesthesiology and Intensive Care Medicine, University of Lubeck, Department of Anesthesiology and Intensive Care, University of Ljubljana - University Medical Centre Ljubljana, Karolinska Institutet and Ruhr-University Bochum

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