1. Department of Otorhinolaryngology Head and Neck Surgery, China-Japan Union hospital of Jilin University, Changchun130033, China
2. Department of Neurosurgery, China-Japan Union hospital of Jilin University, Changchun130033,China
3. Department of Vascular Surgery, China-Japan Union hospital of Jilin University, Changchun130033, China
4. Department of Neurosurgery, The People’s Hospital of Fusong County of Jilin Province, Fusong134500, China