1. Department of Neurology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, China
2. Department of Neurology, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, Guangdong Province, China
3. Department of Neurology, Zhuzhou 331 Hospital, Zhuzhou, Hunan Province, China
4. Department of Neurology, The Second Affiliated Hospital of GuangZhou Medical University, Guangzhou, Guangdong Province, China