1. Department of Psychology , Norwegian University of Science and Technology, Faculty of Social and Educational Sciences , Trondheim , Norway
2. Hysnes Rehabilitation Center , St. Olav’s University Hospital , Trondheim , Norway , Phone: (+47)41 60 87 35
3. Department of Pain Management and Research , Oslo University Hospital , Oslo , Norway
4. Hysnes Rehabilitation Center , St. Olav’s University Hospital , Trondheim , Norway
5. Department of Circulation and Medical Imaging , Norwegian University of Science and Technology , Trondheim , Norway
6. Department of Pain and Complex Symptom Disorders , Clinic of Anaesthesia and Intensive Care , St. Olavs University Hospital , Trondheim , Norway
7. Department of Psychology , University of Oslo , Oslo , Norway