[1] Department of Medical Ultrasound, Shanghai Jiaotong University Affiliated Sixth People’s Hospital, Shanghai, China
[2] The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
[3] Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China
[4] Shanghai Municipal Key Clinical Specialty, Shanghai, China
[5] Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai, China