1. Foothills Medical Center, University of Calgary, Alberta, Canada
2. Department of Traumatology, Maastricht University Medical Center, Maastricht, The Netherlands
3. Hospital das Clinicas HCFMUSP, Faculdade de Medicina Universidade de Sao Paulo, Sao Paulo, Brazil
4. King Abdulaziz Medical City, Al-Madinah, Saudi Arabia
5. Office for Continuing Professional Development, Vanderbilt University Medical Center, Nashville TN, USA
6. AO Foundation, AO Education Institute, Duebendorf, Switzerland