1. Department of Trauma Surgery, University Hospitals Leuven, Leuven, Belgium
2. Department of Development and Regeneration, KU Leuven, Leuven, Belgium
3. AO Research Institute Davos, Davos, Switzerland
4. Laboratory of Gene Technology, KU Leuven, Leuven, Belgium
5. Laboratory for Molecular and Cellular Technology, Queen Astrid Military Hospital, Brussels, Belgium
6. Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
7. Trauma Research Unit Department of Surgery, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
8. Department of Orthopaedic Surgery and Rehabilitation, Vanderbilt University Medical Center, Nashville, Tennessee, USA