1. State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
2. Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China
3. Department of Gynecology and Obstetrics, Suining Municipal Hospital of Traditional Chinese Medicine, Sichuan, PR China
4. Department of Oncology, Suining Municipal Hospital of Traditional Chinese Medicine, Sichuan, PR China