1. Department of Orthopaedic Surgery; Peking Union Medical College Hospital; Peking Union Medical College and Chinese Academy of Medical Sciences; No.1 Shuaifuyuan; Beijing 100730 P.R. China
2. Beijing Key Laboratory for Genetic Research of Bone and Joint Disease; No.1 Shuaifuyuan; Beijing 100730 P.R. China
3. Biology and Biomedical Sciences; Division of Medical Sciences; Harvard Medical School; Boston Massachusetts
4. PET-CT Center, Cancer Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, No. 17, Pan Jia Yuan Nan-li; Beijing 100021 P.R. China
5. Shenzhen Key Laboratory of Anti-Ageing and Regenerative Medicine; Center for Anti-Ageing and Regenerative Medicine; Shenzhen University Medical School; Shenzhen Guangdong Province 506080 P.R. China
6. Department of Orthopaedic Surgery; West China Hospital; Sichuan University; Chengdu 610041 P.R. China
7. School of Biomedical Sciences Core Laboratory; Institute of Stem Cell; Genomics and Translational Research; Shenzhen Research Institute; Chinese University of Hong Kong; Shenzhen 518057 China
8. Ministry of Education Key Laboratory for Regenerative Medicine; School of Biomedical Sciences; Faculty of Medicine; Chinese University of Hong Kong; Hong Kong SAR 999077 China
9. Central laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences; No.1 Shuaifuyuan; Beijing 100730 P.R. China