1. Department of Ultrasound, Drumtower Hospital Affiliated to Medicial College of Nanjing University, Nanjing, China
2. Department of Radiology, Drumtower Hospital Affiliated to Medicial College of Nanjing University, Nanjing, China
3. Department of Hepatobiliary Surgery, Drumtower Hospital Affiliated to Medicial College of Nanjing University, Nanjing, China
4. Department of Pathology, Drumtower Hospital Affiliated to Medicial College of Nanjing University, Nanjing, China