1 Department of Intensive Care Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland; Institute of Nursing Science (INS), Department of Public Health (DPH), Faculty of Medicine, University of Basel, Basel, Switzerland. Electronic address: Marie-Madlen.Jeitziner@insel.ch.
2 Nursing Research, University Hospital of Schleswig-Holstein, Kiel, Germany. Electronic address: Peter.Nydahl@uksh.de.