Affiliation: | 1. Department of Neuroradiology, University of Heidelberg Medical School, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany 2. Department of Orthopaedics, University of Heidelberg Medical School, Schlierbacher Landstra?e 200a, 69118, Heidelberg, Germany 3. Department of Neurosurgery, University of Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538, Luebeck, Germany 4. Department of Diagnostic and Interventional Neuroradiology, University Hospital Basle, Petersgraben 4, CH 4031, Basle, Switzerland
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