1. Department of Rehabilitation Medicine, Jikei University School of Medicine, Minato-ku, Tokyo, Japan
2. Department of Neurology and Neurological Sciences, Stanford Stroke Center, Stanford University Medical Center, Palo Alto, California, USA
3. Department of Neurology, University Hospital of Leuven, UZ Gasthuisberg, Leuven, Belgium
4. Department of Radiology, Stanford Stroke Center, Stanford University Medical Center, Palo Alto, California, USA
5. Department of Neurology, University of Pittsburgh Medical Center Stroke Institute, Pittsburgh, Pennsylvania, USA