1. Department of Orthopedic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
2. Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat Sen University, Guangzhou, Guangdong 510080, P.R. China
3. OrigiMed Co. Ltd., Shanghai 201114, P.R. China
4. Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
5. Department of Pathology, Peking University Third Hospital, Beijing 100191, P.R. China