1. Department of Assisted Reproduction, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Zhizaoju Road No. 639, Huangpu District, Shanghai 200011, People’s Republic of China
2. Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University School of Medicine, South Chongqing Road No. 280, Huangpu District, Shanghai 200025, People’s Republic of China