1. Department of Neurosurgery, Jiangxi Provincial People’s Hospital, Nanchang 330006, Jiangxi, China
2. The First Affiliated Hospital of Nanchang Medical College, Nanchang 330006, Jiangxi, China
3. Nanchang First Retired Cadre Rest House of Jiangxi Military Region, Nanchang 330006, Jiangxi, China
4. Department of Gastrointestinal Surgery, Jiangxi Provincial People’s Hospital, Nanchang 330006, Jiangxi, China