1. From the Center for Reproductive Medicine, Shandong Provincial Hospital–Shandong University, the Key Laboratory of Reproductive Endocrinology of Ministry of Education, and the National Research Center for Assisted Reproductive Technology and Reproductive Genetics (Y. Shi, D.W., Z.W., M.S. H. Liu, J.L., L.Z., Z.-J.C.), and the Center for Reproductive Medicine, Qilu Hospital of Shandong University (X.D.), Jinan, the Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong...