1. Nantong Health College of Jiangsu Province, Nantong 226010, Jiangsu, China
2. School of Medicine, Nantong University, Nantong 226001, Jiangsu, China
3. Department of Medical Ultrasound and Radiology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China
4. Department of Pathology, Affiliated Hospital of Nantong University, Nantong 226001, Jiangsu, China