Jinxin Research Institute of Reproductive Medicine and Genetics, Jinjiang Maternal and Children’s Health Hospital, Chengdu, Sichuan 610020, P. R. China;
Nanchuan Research Institute of Biotechnology, Chongqing 408400, P. R. China
Institute of Genetic Medicine, School of Life Science, Sichuan University, Chengdu, Sichuan 610041, P. R. China.