1. Xi’an Jiaotong University, Xi’an, China
2. Department of Neurosurgery, Second Affiliated Hospital of Xi’an Jiao Tong University, Xi’an, China
3. Department of Orthopedics, Civil Aviation General Hospital, Chaoyang, Beijing, China
4. Department of Thoracic Surgery, Second Affiliated Hospital of Xi’an Jiao Tong University, Xi’an, China
5. Xi’an Medical University, Xi’an, China