1. Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
2. Department of Neurology, The Third People’s Hospital of Chengdu, Chengdu, China
3. Department of Radiology, West China Hospital, Sichuan University, Chengdu, China
4. The George Institute China at Peking University Health Science Center, Beijing, China
5. The George Institute for Global Health, Faculty of Medicine, UNSW, Sydney, Australia