1. The Third Central Clinical College of Tianjin Medical University; Tianjin China
2. Department of Hepatobiliary Surgery; The Third Central Hospital of Tianjin; Tianjin China
3. Department of Ultrasound; The Third Central Hospital of Tianjin; Tianjin China
4. Key Laboratory of Artificial Cell; Institute of Hepatobiliary Disease; The Third Central Hospital of Tianjin; Tianjin China