1. Department of Spine Surgery, Honghui Hospital Xi'an Jiaotong Univerisity, School of Medicine Xi’an Shaanxi China
2. Department of Orthopedics The Second Affiliated Hospital of Harbin Medical University Harbin China
3. Key Laboratory of the Ministry of Education Ministry of Myocardial Ischemia Harbin China
4. Department of Joint Surgery, Honghui Hospital Xi'an Jiaotong University, School of Medicine Xi'an Shaanxi China