1. Division of Psychosomatics and Psychiatry, University Children's Hospital Zurich, Zurich, Switzerland
2. Department of Anesthesiology, Critical Care and Pain Medicine, Harvard Medical School, Boston Children's Hospital, Boston, MA, USA
3. Department of Consultation-Liaison Psychiatry and Psychosomatic Medicine, University Hospital Zurich, University of Zurich, Zurich, Switzerland
4. Faculty of Health, University of Plymouth, Plymouth, United Kingdom
5. Department of Neuroscience, Imaging and Clinical Sciences, G. d'Annunzio University of Chieti-Pescara, Chieti - Pescara, Italy
6. Department of Biological and Experimental Psychology, Queen Mary University, London, United Kingdom