1. China Medical University; Department of Neurology, Shengjing Hospital; 36 Shanhao Street Shenyang Liaoning China 110004
2. University of Cambridge; Institute of Public Health; Forvie Site Robinson Way Cambridge UK CB2 0SR
3. University of Exeter Medical School, University of Exeter; Institute of Health Research; Veysey Building Salmon Pool Lane Exeter UK EX2 4SG
4. University of Oxford; Radcliffe Department of Medicine; Room 4401c (4th Floor) John Radcliffe Hospital, Headington Oxford UK OX3 9DU
5. University of Birmingham; Public Health, Epidemiology and Biostatistics; Edgbaston Birmingham UK B15 2TT
6. Shengjing Hospital, China Medical University; Department of Neurology; 36 Shanhao Street Shenyang China 110004