1 Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Shatin, Hong Kong, Hong Kong SAR, China.
2 Department of Neurology, University of Chicago, Chicago, IL, United States.
3 Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, Suwon-si, South Korea.
4 Department of Neurology, Henry Ford Health System, Detroit, MI, United States.
5 Department of Neurology, Neurovascular Imaging Research Core and UCLA Stroke Center, University of California, Los Angeles, Los Angeles, CA, United States.