1. Ultrasound Imaging Department of the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
2. Anesthesiology Department, Wenzhou Integrated Traditional Chinese and Western Medicine Hospital, Wenzhou 325000, China
3. Obstetrics and Gynecology Department, Wenzhou Integrated Traditional Chinese and Western Medicine Hospital, Wenzhou 325000, China
4. Department of General Surgery, Wenzhou Central Hospital, The Second Affiliated Hospital of Shanghai University, Wenzhou 325000, China