1. Department of Gynecology, Chongqing Haifu Hospital, Chongqing, China
2. Department of Gynecology, Three Gorges Central Hospital, Chongqing, China
3. Aegisroen Obstetric Gynaecology Clinic, Seoul, Korea
4. State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing, China
5. Collaborative Innovation Center for Minimally-Invasive and Noninvasive Medicine, Chongqing Medical University, Chongqing, China
6. Department of Gynecology, Chongqing Angel Women’s & Children’s Hospital, Chongqing, China