Jinan University - Department of Public Health and Preventive Medicine, Jinan University - Department of Hospital Infection Control, Imperial College London - Department of Primary Care and Public Health, University of New South Wales (UNSW) - The George Institute for Global Health, Jinan University - Department of Neurology and Stroke Center, Jinan University - Department of Neurology and Stroke Center, Jiangnan University - Department of Public Health and Preventive Medicine, Jinan University - Department of Clinical Research and Jinan University - Department of Neurology and Stroke Center