1. Department of Plastic, Reconstructive, Aesthetic and Hand Surgery; University Hospital Basel; Basel Switzerland
2. Department of Neuropathology; Institute of Pathology; University Hospital Basel; Basel Switzerland
3. Basel Institute for Clinical Epidemiology and Biostatistics; University Hospital Basel; Basel Switzerland
4. Department of Radiology; University Hospital Basel; Basel Switzerland
5. Department of Spinal Surgery; University Hospital of Basel; Basel Switzerland