1. Department of Obstetrics and Gynecology, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
2. Department of Breast Surgery, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, Shaanxi, China
3. School of Medicine, Xi’an Jiaotong University, Xi’an, Shaanxi, China
4. Department of Obstetrics and Gynecology, Northwest Women’s and Children’s Hospital, Xi’an, Shaanxi, China
5. Department of Radiology, the First Affiliated Hospital of Xi’an Medical University, Xi’an, Shaanxi, China