1. Department of Orthopedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
2. Department of Pathology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
3. Department of Gynecology, International Peaceful Healthcare Hospital for Women & Children of China, Welfare Institute, Shanghai Jiao Tong University, Shanghai 200230, China
4. Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China