1. State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing, the Ministry of Science and Technology, College of Biomedical Engineering, Chongqing Key Laboratory of Biomedical Engineering, Chongqing Collaborative Innovation Center for Minimally-Invasive and Noninvasive Medicine, Chongqing Medical University, Chongqing, China;
2. Guizhou Maternal and Child Health Hospital, Guizhou Medical University, Guizhou, China