[1] University Hospital of Muenster,Department of Clinical Radiology
[2] University Hospital of Muenster,Department of Neurosurgery
[3] University Hospital of Muenster,Department of General Pediatrics, Subdivision Pediatric Neurology
[4] Leibniz University Hannover,Institute of Biostatistics
[5] ETH and University of Zurich,Institute for Biomedical Engineering
[6] University Hospital Muenster,Department of Clinical Radiology