| Affiliation: | 1. Department of Orthopaedic Surgery, Emory University, Atlanta, GA, USA;2. Department of Orthopaedic Surgery, Wakayama Medical University, Wakayama, Japan;3. Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA;4. Department of Neurosurgery, Bergmannstrost Hospital, Halle, Germany;5. Department of Neurological Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA;6. Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA |
