1. Department of Neurology; Beijing Tiantan Hospital; Capital Medical University; Beijing China
2. Neurology Department; St George's Hospital; London UK
3. Channing Laboratory; Department of Medicine; Brigham and Women's Hospital; Harvard Medical School; Boston MA USA
4. Department of Nutrition; Harvard University School of Public Health; Boston MA USA
5. Department of Cardiology; Kailuan Hospital; Hebei United University; Tangshan China