1. Department of Paediatrics and Adolescent Medicine, Akershus University Hospital, Lørenskog, Norway
2. Department of Clinical Epidemiology, Karolinska Institutet, Stockholm, Sweden
3. General Practitioner, Hjelmeland, Norway
4. VID Specialized University, Oslo, Norway
5. St. Olavs Hospital, Trondheim, Norway
6. Tropical and infectious Disease Unit, Royal Liverpool University Hospital. Liverpool University Hospitals Foundation Trust, Liverpool, UK
7. Department of Behavioral Medicine, University of Oslo, Oslo, Norway
8. Unit Psychosomatic medicine and CL psychiatry, Rikshospitalet, Oslo University Hospital, Oslo, Norway
9. Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
10. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
11. Division for Health Services, Norwegian Institute of Public Health, Oslo, Norway
12. Department of Child and Adolescent Mental Health in Hospitals, Oslo University Hospital, Oslo, Norway
13. Department of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, England
14. Department of Sport, Food and Natural Sciences, Western Norway University of Applied Sciences, Bergen, Norway
15. Research Clinic for Functional Disorders and Psychosomatics. Aarhus University Hospital, Aarhus, Denmark
16. Centre for Epidemic Interventions Research, Norwegian Institute of Public Health, Oslo, Norway
17. Department of General Practice, University of Oslo, Oslo, Norway
18. Faculty of Medicine and Health Sciences, Department of Public Health and Nursing, General Practitioner Research Unit, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
19. Nydalen Helsehus, Oslo, Norway
20. The Child & Adolescent Health Services, University Hospital of North Norway, Tromsø, Norway
21. Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, England
22. National Advisory Unit on Psychosomatic Disorders in Children and Adolescents. Department of Child and Adolescent Mental Health in Hospitals, Oslo University Hospital, Oslo, Norway
23. Department of Pain management and research, Oslo University Hospital, Oslo, Norway
24. The Mind Body Lab, Department of Psychology, University of Oslo
25. University of Oslo, Oslo, Norway
26. Department of Behavior Medicine, Karolinskal University Hospital, Stockholm, Sweden
27. Department of Clinical Neuroscience, Karolinska Institutet Stockholm, Sweden
28. Department of Medical Psychology, Amsterdam University Medical Centres, Location University of Amsterdam, Amsterdam, The Netherlands
29. Department of Psychology, NTNU, Trondheim, Norway
30. University of Bergen, Bergen, Norway
31. Stress Research Institute, Department of psychology, Stockholm University, Division of Psychology/Osher Center for Integrative Health, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
32. Department of Health, Medicine, and Caring Sciences Pain and Rehabilitation Center, Linköping University Hospital, Linköping, Sweden
33. Center for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
34. Helsinki University Hospital, Helsinki, Finland
35. Saglia medical center, Vestby, Norway
36. CatoSenteret Rehabilitation Center, Son, Norway
37. Division of Clinical Neuroscience. Institute of Clinical Medicine, University of Oslo, Oslo, Norway
38. Chief Physician, Falck Norge, Oslo, Norway
39. Department of Child and Adolescent Psychiatry, Aarhus University Hospital, Aarhus, Denmark
40. General Practitioner, Klosterhagen Legesenter, Norway
41. Outpatient Clinic for Functional Disorders, Helsinki University Hospital, Helsinki, Finland
42. Psychological Medicine, University of Oxford, Oxford, UK
43. Department of Medicine, Diakonhjemmet Hospital, Oslo, Norway
44. Department of Medicine, Lovisenberg Diaconal Hospital, Oslo, Norway
45. Department of Community Medicine and Global Health, Institute for Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway
46. Clinical Psychologist, Oslo, Norway