1. Department of Neurosurgery, The First People’s Hospital of Mudanjiang, Mudanjiang City, Heilongjiang Province, China
2. Department of Neurosurgery, The Fourth Affiliated Hospital of Harbin Medical University, Haerbin, Heilongjiang Province, China
3. Department of Neurology, The Sixth People’s Hospital of Nantong City, Nantong City, Jiangsu Province, China