1. Meditech Foundation, Cali, Colombia;
2. Clemenshospital Münster, Germany;
3. Department of Neurosurgery, Medical University of Vienna, Austria;
4. University Hospital of Ulm, Germany;
5. Fondazione per la Ricerca Ospedale Maggiore, Bergamo, Italy;
6. Hospital 12 de Octubre, Madrid, Spain;
7. BG Unfallklinik Murnau, Germany;
8. AO Education Institute, AO Foundation, Dubendorf, Switzerland;
9. University of Manitoba, Winnipeg, Manitoba, Canada;
10. Massachusetts General Hospital, Boston, Massachusetts;
11. University of Miami, Florida;
12. Universidad El Bosque, Bogota, Colombia; and
13. Global Neuro Foundation, Davos, Switzerland