1Neurocritical Care and Stroke Unit, Department of Neurology, University of Leipzig, Liebigstrasse 20, 04103 Leipzig, Germany
2Department of Neurology, Yale School of Medicine, P.O. Box 208018, New Haven, CT 06520-8018 USA
3Department of Neurology, Universitätsklinikum Würzburg, Josef-Schneider-Strasse 11, 97080 Würzburg, Germany
4Department of Neurology, Anesthesiology and Surgery, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655 USA
5Neurosurgery Center Ludwigsburg-Heilbronn, RKH Klinikum Ludwigsburg, Posilipostrasse 4, 71640 Ludwigsburg, Germany
6Department of Neurology, University of Erlangen, Schwabachanlage 6, 91054 Erlangen, Germany
7Department of Neurology, Mayo Clinic, 200 First St SW, Rochester, MN 55905 USA
8Department of Neurology, Boston University Medical Center, 72 East Concord St, Boston, MA 02118 USA
9Department of Neurology, University of California San Francisco, 1001 Potrero Ave, San Francisco, CA 94110 USA
10Department of Neurosurgery, University of Leipzig, Liebigstrasse 20, 04103 Leipzig, Germany
11Department of Neurology and Neurosurgery, Henry Ford Hospital, 2799 W. Grand Blvd Neurosurgery - K-11, Detroit, MI 48202 USA