1. Department of Neurology, Rigshospitalet, Copenhagen University Hospital , Blegdamsvej 9 , DK-2100 Copenhagen, Denmark
2. Department of Clinical Medicine, University of Copenhagen , Copenhagen 2100 , Denmark
3. Department of Neuroscience, Istituto di Ricerche Farmacologiche Mario Negri IRCCS , Milan 20156 , Italy
4. Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Harvard Medical School , Boston, MA 02115 , USA
5. Department of Neurology, Massachusetts General Hospital, Harvard Medical School , Boston, MA 02114 , USA
6. NeuroIntensive Care, ASST di Monza , Monza 20900 , Italy
7. School of Medicine and Surgery, Università Milano Bicocca , Milan 20100 , Italy
8. Department of Neurology, New York Medical College , Valhalla, NY 10595 , USA
9. College of Nursing, The Ohio State University , Columbus, OH 43210 , USA
10. Division of Anaesthesia, University of Cambridge , Cambridge CB2 2QQ , UK
11. Department of Neurology, Neuro-Intensive Care Unit, Medical University of Innsbruck , Innsbruck 6020 , Austria
12. Neuro-anesthesiology and Intensive Care Medicine, Sainte-Anne Hospital, Paris-Descartes University , Paris 75006 , France
13. Experimental Neuropathology, Infection and Epidemiology Department, Institut Pasteur , Paris 75015 , France
14. Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine , Baltimore, MD 21287 , USA
15. Department of Neurology, The Johns Hopkins University School of Medicine , Baltimore, MD 21218 , USA
16. Department of Neurosurgery, The Johns Hopkins University School of Medicine , Baltimore 21287, MD , USA
17. Department of Neurology, David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
18. Department of Neurosurgery, David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
19. Division of Vascular Neurology and Neurocritical Care, Baylor College of Medicine and CHI Baylor St Luke's Medical Center , Houston, TX 77030 , USA