[1
]
Department of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated to
Shanghai Jiao Tong University School of Medicine, Shanghai, China.
[2
]
Center for Reproductive Medicine, Renji Hospital Affiliated to Shanghai Jiao Tong
University School of Medicine, Shanghai, China.
[3
]
Department of Gynecology and Obstetrics, Renji Hospital Affiliated to Shanghai Jiao
Tong University School of Medicine, Shanghai, China.
[4
]
Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University,
Shanghai, China.