1. Department of Orthopaedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China (mainland)
2. Department of Radiotherapy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China (mainland)
3. Department of Orthopaedics, Tongji Hospital, Tongji University School of Medicine, Shanghai, China (mainland)
4. Department of Orthopedics, Shanghai Bone Tumor Institute, Shanghai General Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China (mainland)