1. Spine Center, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
2. Department of Diagnostic and Interventional Radiology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
3. Department of Orthopedics and Traumatology, Lausanne University Hospital and University of Lausanne, 1011 Lausanne, Switzerland
4. Faculty of Biology and Medicine, University of Lausanne, 1011 Lausanne, Switzerland
5. Neuro-Orthopaedic Spine Unit, Clinic Cecil, 1003 Lausanne, Switzerland