1. Department of Orthopedic Oncology Yantai Shan Hospital Yantai China
2. Department of Orthopedics The Second Affiliated Hospital Zhejiang University School of Medicine Hangzhou China
3. Departments of Joint Surgery Shandong Provincial Hospital Affiliated to Shandong First Medical University Jinan China
4. Department of Orthopaedic Surgery Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai China