1 Department of Neurology, The Second Affiliated Hospital of Soochow University; Institute of Neuroscience, Soochow University, Suzhou, Jiangsu 215004, China.
2 Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China.
3 Department of Neurology, Xuan Wu Hospital, Capital Medical University, Beijing 100053, China.
4 Department of Neurology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221006, China.
5 Department of Neurology and National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China.
6 Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai 200025, China.
7 Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
8 Department of Neurology, Guangdong Neuroscience Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China.
9 Department of Neurology, Beijing Hospital, National Center of Gerontology, Beijing 100730, China.
10 Department of Neurology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.
11 National Parkinson Foundation Centre of Excellence and The Maurice Wohl Clinical Neuroscience Institute, King's College London and King's College Hospital, London WC2R 2LS, UK.