1. Department of Pain Management and Research, Division of Emergencies and Critical Care Oslo University Hospital Oslo Norway
2. Norwegian National Advisory Unit on Neuropathic Pain, Division of Emergencies and Critical Care Oslo University Hospital Oslo Norway
3. Institute of Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
4. Department of Cardiology Akershus University Hospital Lørenskog Norway
5. Department of Clinical Medicine UiT The Arctic University of Norway Tromsø Norway
6. Clinical Neuroscience Research Group, Department of Psychology University of Oslo Oslo Norway
7. National Competence Centre for Complex Symptom Disorders St. Olavs University Hospital Trondheim Norway
8. Department of Community Medicine UiT The Arctic University of Norway Tromsø Norway
9. Department of Neurology University Hospital of North Norway Tromsø Norway
10. Division of Ageing and Health Norwegian Institute of Public Health Oslo Norway