1. Department of Ultrasound Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China
2. Collaborative Innovation Center for Maternal and Infant Health Service Application Technology of Education Ministry, Quanzhou Medical College, Quanzhou, Fujian, China
3. Department of Cardiovascular Disease, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China