1. Department of Gastroenterology; the Affiliated Drum Tower Hospital of Nanjing University, Medical School; Nanjing Jiangsu China
2. Department of Anatomical and Cellular Pathology; State Key Laboratory of Oncology in South China; Institute of Digestive Disease; Partner State Key Laboratory of Digestive Disease; Prince of Wales Hospital; The Chinese University of Hong Kong; Hong Kong SAR China
3. Department of Respiratory Medicine; Jinling Hospital; Nanjing University, Medical School; Nanjing Jiangsu China
4. The Key Laboratory of Molecular Biology on Infectious Diseases; Ministry of Education; The Second Affiliated Hospital of Chongqing Medical University; Chongqing Medical University; Chongqing China
5. Department of Surgery; Technical University of Munich; Munich Germany
6. Department of Laboratory Medicine; Changhai Hospital; the Second Military Medical University; Shanghai China