Transfer of Fresh versus Frozen Embryos in Ovulatory Women

Yuhua Shi¹, Yun Sun¹, Cuifang Hao¹+27

• ¹From 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 University, and Shanghai Key Laboratory of Assisted Reproduction and Reproductive Genetics (Y. Sun, Z.-J.C.), and the Shanghai Jiai Genetic and IVF Center, Obstetrics and Gynecology Hospital, Fudan University (X.S.), Shanghai, the Center for Reproductive Medicine of Yantai Yuhuangding Hospital, Yantai (C.H.), the Center for Reproductive Medicine, Tianjin Central Hospital of Obstetrics and Gynecology, Tianjin (Y. Zhang), the Department of Reproductive Endocrinology, Women's Hospital (Y. Zhu, D.Z.), and the Center for Reproductive Medicine (S.Z.), School of Medicine, Zhejiang University, Hangzhou, the Affiliated Hospital of Qingdao University (X.Q.) and the Center for Reproductive Medicine, Qingdao Women and Children's Hospital-Qingdao University (Y. Zhou), Qingdao, the Center for Reproduction and Genetics, Suzhou Municipal Hospital, Suzhou (H. Li), the Department of Reproductive Medicine, First Affiliated Hospital of Nanjing Medical University-Jiangsu Province Hospital, Nanjing, (X.M.), the Reproductive Medicine Center of Jinghua Hospital, Shenyang (H.R.), the Center for Reproductive Medicine, Wuhan University, Wuhan (Y.W.), the Reproductive Medicine Research Center, 6th Affiliated Hospital of Sun Yat-sen University (B.W.), the Center for Reproductive Medicine, Women and Children's Hospital of Guangdong Province (F.L.), and the Center for Reproductive Medicine, Sun Yat-sen Memorial Hospital of Sun Yat-sen University (X.C.), Guangzhou, the Center for Reproductive Medicine, Maternal and Child Health Care Hospital of Jiangxi Province, Nanchang (Q.W.), the Center for Assisted Reproduction, Northwest Women and Children's Hospital, Xi'an (H.B.), and the Center for Reproductive Medicine, Beijing Chaoyang Hospital, Beijing (Y.L.) - all in China; the Department of Biostatistics, Yale University School of Public Health, New Haven, CT (H.Z.); and the Department of Obstetrics and Gynecology, Penn State College of Medicine, Hershey, PA (R.S.L.).