1. Department of Neurology, Chang Gung University College of Medicine, Chang Gung Memorial Hospital, Keelung Branch, Taiwan
2. Division of General Internal Medicine, Massachusetts General Hospital, and Harvard Medical School, Boston
3. Institute of Population Health Sciences, National Health Research Institutes, Miaoli County, Taiwan
4. General Clinical Research Center, Division of Cardiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan
5. Department of Radiology, Chang Gung University College of Medicine, Chang Gung Memorial Hospital, Chiayi Branch, Taiwan
6. Department of Neurology, Chang Gung University College of Medicine, Chang Gung Memorial Hospital, Chiayi Branch, Taiwan
7. Department of Neurology, Medical University of South Carolina, Charleston
8. Now with Department of Neurology, University of California, San Francisco