1. Institute of Nursing Science, University of Basel, Basel, Switzerland
2. Division of Pediatric Emergency Medicine, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
3. Institute of Nursing Science, University of Basel, Bernoullistrasse 28, Basel 4056, Switzerland
4. Division of Pediatric Palliative Care and Children’s Research Center, University Children’s Hospital Zurich, Zurich, Switzerland
5. Division of Haematology–Oncology, University Children’s Hospital beider Basel (UKBB), Basel, Switzerland