1. Department of Neurology; University of Erlangen-Nuremberg; Erlangen
2. Department of Neurology; Charité-Universitätsmedizin Berlin; Berlin
3. Center for Stroke Research Berlin; Berlin
4. German Center for Cardiovascular Research; Berlin
5. German Center for Neurodegenerative Diseases; Berlin
6. Department of Neurosurgery; Charité-Universitätsmedizin Berlin; Berlin
7. Department of Neurology; Heidelberg University Hospital; Heidelberg
8. Department of Neurology; Community Hospital Nuremberg; Nuremberg
9. Department of Neurology and Neurogeriatry; Johannes Wesling Medical Center Minden; Minden
10. Department of Neurology; University of Cologne; Cologne
11. Department of Neurology; University of Dresden; Dresden
12. Department of Neurology; University of Ulm; Ulm
13. Department of Neurology; Asklepios Clinic Altona; Hamburg
14. Department of Neurology; University of Leipzig; Leipzig
15. Department of Neuroradiology; University of Erlangen-Nuremberg; Erlangen Germany