1. Department of Spine Surgery, Princess Elisabeth Orthopaedic Centre, Royal Devon and Exeter Hospital, Exeter, Devon, United Kingdom
2. Department of Orthopedics, University of Mississippi Medical Center, Jackson, Mississippi, United States
3. Department of Orthopaedic Surgery, University of Cape Town, Cape Town, South Africa
4. Department of Orthopaedics, Queensland University, Brisbane, Australia
5. Department of Orthopaedics, Auckland City Hospital, Grafton, Auckland, New Zealand
6. Department of Orthopaedic Trauma, Auckland City Hospital, Grafton, Auckland, New Zealand
7. Sports Surgery Clinic, Dublin, Ireland
8. Department of Orthopaedics, Middlemore Hospital, Auckland, New Zealand
9. Pediatric Orthopaedic Department, Robert Debré Hospital, Paris, France
10. Department of Trauma and Orthopaedics, University Hospital of Wales, Cardiff, United Kingdom
11. Spectrum Research, Inc., Tacoma, Washington, United States