1. Research Unit for Musculoskeletal Function and Physiotherapy, Institute of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
2. The Research Unit PROgrez, Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospitals, Region Zealand, 4200 Slagelse, Denmark
3. Danish Centre for Motivation and Behaviour Science, University of Southern Denmark, Odense, Denmark
4. HRB Centre for Primary Care Research, Department of General Practice, Royal College of Surgeons in Ireland (RCSI), Dublin, Ireland
5. Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
6. Mental Health Services in the Capital Region of Denmark, Mental Health Centre Glostrup, University of Copenhagen, Copenhagen, Denmark
7. MRC/CSO Social and Public Health Sciences Unit & Robertson Centre for Biostatistics, Institute of Health and Well Being, University of Glasgow