1. Department of Trauma & Reconstructive Surgery, University Hospital Carl Gustav Carus, Dresden, Germany
2. Stockholms Fotkirurgklinik Sophiahemmet, Stockholm, Sweden
3. Medical University of South Carolina, Charleston, SC, USA
4. Centre Hospitalier Universitaire d’Angers, Angers, France
5. Eisenhower Desert Orthopedics Center, Rancho Mirage, CA, USA
6. Harborview Medical Center, Seattle, WA, USA
7. Center for Musculoskeletal Surgery, Charité–Universitätsmedizin Berlin, Germany
8. AO Clinical Investigation and Documentation, Dübendorf, Switzerland
9. Department of Orthopaedic Surgery, New York Downtown Hospital, New York, NY, USA