| Affiliation: | 1. Department of Research, Norwegian Air Ambulance Foundation, Dr?bak, Norway;2. Department of Anesthesiology and Intensive Care, S?rlandet 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 |
