[1] The Rothman Institute at Thomas Jefferson University,Berufsgenossenschaftliche Unfallklinik Frankfurt
[2] University Medical Center,Klinikum Suedstadt Rostock
[3] Catholic University,Schön Klinik Nürnberg Fürth
[4] Center for Spinal Surgery and Neurotraumatology,undefined
[5] Department of Orthopaedic and Trauma Surgery,undefined
[6] Center for Spinal Therapy,undefined
[7] The Swedish Neuroscience Institute,undefined
[8] University of Maryland School of Medicine,undefined
[9] University of Toronto,undefined
[10] University of British Columbia,undefined