About the Authors

Carsten Hermes

Contributed equally to this work with: Carsten Hermes, Peter Nydahl

Roles Conceptualization, Data curation, Investigation, Methodology, Writing – original draft, Writing – review & editing

Affiliation CCRN, Bonn, Germany

Peter Nydahl

Contributed equally to this work with: Carsten Hermes, Peter Nydahl

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Validation, Visualization, Writing – original draft, Writing – review & editing

Affiliation Nursing Research, Department of Anesthesiology and Intensive Care Medicine, University Hospital of Schleswig-Holstein, Kiel, Germany

Manfred Blobner

Roles Formal analysis, Methodology, Validation, Writing – review & editing

Affiliation Department of Anesthesiology and Intensive Care, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany

Rolf Dubb

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Academy of District Clinics Reutlingen, Reutlingen, Germany

Silke Filipovic

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Department of Physiotherapy, University Hospital of Giessen and Marburg, Marburg, Germany

Arnold Kaltwasser

Roles Conceptualization, Methodology, Writing – review & editing

Affiliation Academy of District Clinics Reutlingen, Reutlingen, Germany

Bernhard Ulm

Roles Formal analysis, Methodology, Validation, Visualization, Writing – review & editing

Affiliation Department of Anesthesiology and Intensive Care, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany

Stefan J. Schaller

Roles Conceptualization, Data curation, Investigation, Methodology, Supervision, Validation, Writing – review & editing

stefan.schaller@charite.de

Affiliations Department of Anesthesiology and Intensive Care, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany, Corporate Member of Freie Universität Berlin, Charité –Universitätsmedizin Berlin, Berlin, Germany, Humboldt-Universität zu Berlin, Charité –Universitätsmedizin Berlin, Berlin, Germany, Department of Anesthesiology and Operative Intensive Care Medicine, Berlin Institute of Health, Berlin, Germany

Competing Interests

CH is self-employed and received honoraria for e.g. professional talks and consulting from different companies. For this Manuscript are no conflicts of interest to declare. PN reports no conflict of interest. MB received research support from MSD (Haar, Germany) not related to this manuscript, received honoraria from giving lectures from GE Healthcare (Helsinki, Finland), MSD (Haar, Germany), Grünenthal (Aachen, Germany). RD received honoraria for professional talks and consulting from different companies. For this Manuscript are no conflicts of interest to declare. SF reports no conflict of interest. AK received honoraria for professional talks and consulting from different companies. For this Manuscript are no conflicts of interest to declare. BU reports no conflict of interest. SJ Schaller reports grants and non-financial support from ESICM (Brussels, Belgium), Fresenius (Germany), Liberate Medical LLC (Crestwood, USA), STIMIT AG (Nidau, Switzerland), MSD (Haar, Germany) as well as from Technical University of Munich, Germany, from national (e.g. DGAI) and international (e.g. ESICM) medical societies (or their congress organizers) in the field of anesthesiology and intensive care, personal fees and non-financial support from Bavarian Medical Association, all outside the submitted work; SJS holds stocks in small amounts from Alphabeth Inc., Bayer AG, Rhön-Klinikum AG, and Siemens AG. These did not have any influence on this study. This does not alter our adherence to PLOS ONE policies on sharing data and materials.