1. Pain Clinic; Center for Anesthesiology, Emergency and Intensive Care Medicine; University Hospital Göttingen; Germany
2. School of Sport; Exercise and Rehabilitation Sciences; College of Life and Environmental Sciences; University of Birmingham; Birmingham UK
3. Department of Medical and Health Sciences; Division of Physiotherapy; Linköping University; Sweden
4. Centre for Clinical Research Sörmland; Uppsala University; Sweden
5. Rehab Väst; County Council of Östergötland; Motala Sweden
6. Department of Business Economics, Health and Social Care; University of Applied Sciences and Arts of Southern Switzerland (SUPSI); Manno Switzerland
7. Rehabilitation Research Laboratory; Department of Business Economics; Health and Social Care; University of Applied Sciences and Arts of Southern Switzerland; Manno Switzerland