1. Reproductive Medicine Center, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China (mainland)
2. Reproductive Medicine Center, First Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
3. Reproductive Medicine Center, Women’s Hospital School of Medicine Zhejiang University, Hangzhou, Zhejiang, China (mainland)