1 Department of Anaesthesiology and Intensive Care, Gødstrup Hospital, Hospitalsparken 15, 7400 Herning, Denmark; Department of Clinical Medicine, Aarhus University, 8200 Aarhus, Denmark. Electronic address: ahn@clin.au.dk.
2 School of Nursing, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Nursing Research Group (GRIN-IDIBELL), Barcelona, Spain.
3 Intensive Care Unit, Hospital Universitario de Jaén, Spain.
4 Institute for General Medicine, University Hospital of Schleswig-Holstein, Kiel, Germany.