1 Department of Medicine III (Interdisciplinary Medical Intensive Care), Medical Center, Faculty of Medicine, University of Freiburg, Hugstetter Strasse 55, 79106, Freiburg, Germany. alexander.supady@universitaets-herzzentrum.de.
2 Department of Cardiology and Angiology I, Heart Center, University of Freiburg, Freiburg, Germany. alexander.supady@universitaets-herzzentrum.de.
3 Heidelberg Institute of Global Health, University of Heidelberg, Heidelberg, Germany. alexander.supady@universitaets-herzzentrum.de.
4 Columbia University College of Physicians and Surgeons/New York-Presbyterian Hospital, New York, USA.
5 Center for Acute Respiratory Failure, Columbia University Medical Center, New York, USA.
6 Cambia Palliative Care Center of Excellence at UW Medicine, Seattle, USA.
7 Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, USA.