1. Department of Consultation-Liaison Psychiatry and Psychosomatic Medicine, University Hospital Zurich, Zurich, Switzerland
2. Faculty of Health, University of Plymouth, Plymouth, United Kingdom
3. Pediatric Rheumatology, University Children's Hospital Basel, Basel, Switzerland
4. Medical Faculty, University of Basel, Basel, Switzerland
5. UiT the Arctic University of Norway, Institute of Community Medicine, Tromsø, Norway
6. Zürich University of Applied Sciences, Institute of Health Economics, Winterthur, Switzerland
7. Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
8. Zürich University of Applied Sciences, Institute of Health Sciences, Winterthur, Switzerland
9. Division of Child and Adolescent Health Psychology, Department of Psychology, University of Zurich, Zurich, Switzerland
10. Department of Psychosomatics and Psychiatry, University Children's Hospital Zurich, Zurich, Switzerland