1. Department of Neurology, Beijing Tiantan Hospital Capital Medical University Beijing China
2. China National Clinical Research Center for Neurological Diseases Beijing China
3. Tiantan Neuroimaging Center of Excellence, Beijing Tiantan Hospital Capital Medical University Beijing China
4. Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Roslindale Boston Massachusetts USA
5. Harvard Medical School Boston Massachusetts USA
6. Department of Physics and Astronomy University of British Columbia Vancouver British Columbia Canada
7. Djavad Mowafaghian Centre for Brain Health, Pacific Parkinson's Research Centre University of British Columbia & Vancouver Coastal Health Vancouver British Columbia Canada
8. Division of Neurology, Department of Medicine University of British Columbia Vancouver British Columbia Canada