1. Department of Nursing, Medical-Technical and Medical-Therapeutic Areas, Inselspital, Bern University Hospital, Bern, Switzerland
2. Department of Otorhinolaryngology–Head and Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
3. School of Health Professions, Zurich University of Applied Science, Winterthur, Switzerland
4. Institute of Nursing Science, University of Basel, Basel, Switzerland