1. Department of Orthopedics, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, People's Republic of China
2. Department of Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, People's Republic of China
3. Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
4. Center for Biotherapy, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China