1. Department of Gastroenterology, the First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, China
2. The Center for Clinical Molecular Medical Detection, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
3. Chongqing Key Laboratory of Molecular Oncology and Epigenetics, the First Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, China
4. Department of Pathology, Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing, China