1. Department
of Obstetrics and Gynecology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
2. Department
of Pharmacy, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
3. Institute
of Ultrasound Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
4. Department
of Biomedical Engineering, The Ohio State University, Columbus, Ohio 43210, United States