1 University Hospital of Schleswig-Holstein, Kiel, Germany; Institute of Nursing Science and Development, Paracelsus Medical University, Salzburg, Austria. Electronic address: Peter.Nydahl@uksh.de.
2 Centre for Care Excellence, Coventry University, United Kingdom. Electronic address: david.mcwilliams@uhcw.nhs.uk.
3 Department of Physiotherapy, Inselspital, Bern University Hospital, Bern, Switzerland. Electronic address: Sabrina.Eggmann@insel.ch.