1. Neurology Department; Klinikum Augsburg; Stenglinstr. 2 86165 Augsburg Germany
2. Department of Surgery, Vascular and Endovascular Surgery; University of Regensburg; Franz-Josef-Strauss Allee 11 93053 Regensburg Germany
3. Neurology Department; University of Regensburg; Universitätsstraße 84 93053 Regensburg Germany