1 Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
2 China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
3 Neurology, Marcus Stroke and Neuroscience Center, Grady Memorial Hospital, Emory University School of Medicine, Atlanta, Georgia, USA.
4 Neurosurgery, Cleveland Clinic Martin Health, Port St Lucie, Florida, USA.
5 Cooper Neurologic Institute, Cooper University Hospital, Camden, New Jersey, USA.
6 Neurology, Cooper Medical School of Rowan University, Camden, New Jersey, USA.
7 China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China yongjunwang@ncrcnd.org.cn.