Institution: | 1. Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, The Key laboratory for Reproductive Endocrinology of Ministry of Education, Jinan 250001, China;2. Yantai Yuhuangding Hospital, Shandong, China;3. Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China |