1. Department of Neurosurgery, Affiliated Kunshan Hospital of Jiangsu University, Suzhou 215300, P.R. China
2. Department of Neurosurgery, Dushu Lake Hospital Affiliated to Soochow University, Suzhou 215300, P.R. China
3. Department of Neurosurgery, Xuancheng People’s Hospital, The Affiliated Xuancheng Hospital of Wannan Medical College, Anhui 242099, P.R. China
4. Department of Neurosurgery, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou 215028, P.R. China