1. Department of Neurosurgery, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, Jiangxi 330006, China
2. Department of Neurosurgery, Peking University People’s Hospital, 11th Xizhimen, South St. Beijing 100044, China
3. Department of Physiology, Dalian Medical University, Dalian 116044, China