1. Department of Neurology, Massachusetts General Hospital, Harvard Medical School, USA
2. Department of Neurology, Dayi Hospital of Shanxi Medical University, China
3. Department of Neurology, Massachusetts General Hospital, Harvard Medical School, USA; Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel.
4. Department of Neurology, Massachusetts General Hospital, 275 Charles Street/Warren Building 310, Boston, MA 02114, USA