| Affiliation: | 1. Department of Vascular Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China;2. Department of Vascular Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China;3. Department of Ultrasound, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China;4. Department of Obstetrics and Gynecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China |
