1. Institute of Orthopaedic Research and Biomechanics, Trauma Research Center Ulm Ulm University Medical Centre Ulm Germany
2. IRCCS Istituto Ortopedico Galeazzi Milan Italy
3. Department of Orthopaedic Surgery Rush University Medical Center and Rush Graduate College Chicago Illinois USA
4. International Spine Research and Innovation Initiative Rush University Medical Center Chicago Illinois USA
5. Department of Diagnostic and Interventional Radiology University Hospital Ulm Ulm Germany
6. SpineServ GmbH Ulm Germany