1. Department of Gastroenterology The Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing China
2. Department of Pathology The Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing China
3. Department of Hepatobiliary Surgery The Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing China
4. Jiangsu Key Laboratory of Molecular Medicine Medical School of Nanjing University Nanjing China
5. Center for Public Health Research Medical School of Nanjing University Nanjing China