1 Institute of Cell Biology and Neurobiology, Center for Anatomy, Charité -Universitätsmedizin Berlin, Berlin, Germany.
2 Department of Interventional and Diagnostic Radiology and Nuclear Medicine, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany.
3 Institute of Cell Biology and Neurobiology, Center for Anatomy, Charité -Universitätsmedizin Berlin; Department of Neurosurgery, HELIOS Klinikum Berlin Buch, Berlin, Germany.