1. Obstetrics & Gynecology Department, The First Affiliated Hospital of Shantou University Medical College, Shantou, People’s Republic of China
2. Stem Cell Research Center, Shantou University Medical College, Shantou, People’s Republic of China
3. The Center for Reproductive Medicine, Shantou University Medical College, Shantou, People’s Republic of China
4. Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, People’s Republic of China
5. Neurosurgical Department, The First Affiliated Hospital of Shantou University Medical College, Shantou, People’s Republic of China
6. Department of Genetics, Yale Stem Cell Center, Yale School of Medicine, New Haven, CT, USA