1. Department of Neurosurgery The Fourth Affiliated Hospital of Nanchang University, Nanchang 330000, Jiangxi, PR China
2. Department of Ultrasonic Nanchang First Hospital, Nanchang 330008, Jiangxi, PR China
3. Department of Neurosurgery The First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, Fujian, PR China