1. Department of Research Norwegian Air Ambulance Foundation Drøbak Norway
2. Department of Anesthesiology and Intensive Care Sørlandet Hospital Kristiansand Norway
3. Department of Orthopedics & Rehabilitation University of Florida Gainesville Florida USA
4. Nike Sport Research Lab Nike Inc. Beaverton Oregon USA
5. Department of Health Studies University of Stavanger Stavanger Norway
6. Department of Biostatistics University of Oslo Oslo Norway
7. Department of Orthopedics University of Texas Huston Texas USA
8. Bay Pines VA Hospital System Bay Pines Florida USA
9. Department of Orthopedic Surgery University of South Florida Tampa Florida USA
10. Department of Anesthesiology and Intensive Care Stavanger University Hospital Stavanger Norway
11. Network for Medical Sciences University of Stavanger Stavanger Norway