1 Department of Spine Surgery, Zhejiang Spine Surgery Centre, Orthopaedic Hospital, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, The Second School of Medicine Wenzhou Medical University, the Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou 325027, China.
2 Department of Otolaryngology-Head and Neck Surgery, Wenzhou Center Hospital, Dingli Hospital of Wenzhou Medical University, The Dingli School of Medicine Wenzhou Medical University, Wenzhou 325027, China.
3 Department of Neurosurgery and Oncology, University of Rochester Medical Center, School of Medicine and Dentistry, Rochester, NY, USA.
4 Department of Orthopaedics, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Key Laboratory of Orthopaedic Implants, Shanghai 200011, China.