1. Shanghai Institute of Medical Genetics, Children's Hospital of Shanghai, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.
2. Key Lab of Embryo Molecular Biology, Ministry of Health, China, and Shanghai Lab of Embryo and Reproduction Engineering, Shanghai, People's Republic of China.
3. Department of Orthopedics, Children's Hospital of Shanghai, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.