1. 1Department of Gynecology and Obstetrics, West China Second Hospital, Sichuan University, Chengdu 610041, China
2. 2Department of Orthopedic Surgery, Sarcoma Biology Laboratory, Sylvester Comprehensive Cancer Center, and The University of Miami Miller School of Medicine. Address: Papanicolaou Cancer Research Building, 1550 NW. 10th Avenue, Miami, FL 33136, U.S.A.
3. 3Musculoskeletal Tumor Center, Beijing Key Laboratory of Musculoskeletal Tumor, Peking University People’s Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing 100044, China
4. 4Department of Orthopaedic Surgery, Keck School of Medicine at University of Southern California (USC), USC Norris Comprehensive Cancer Center, 1441 Eastlake Ave, NTT 3449, Los Angeles, CA 90033, U.S.A.