Affiliation: | 1. Center for Reproductive Medicine, Provincial Hospital Affiliated with Shandong University, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Key Laboratory for Reproductive Endocrinology of the Ministry of Education; and Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, People''s Republic of China;2. Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, People''s Republic of China |