1 Department of Gastroenterology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China.
2 Fujian Clinical Research Center for Liver and Intestinal Diseases, Fuzhou, Fujian, China.
3 Department of Gastroenterology, People's Hospital of Yuanzhou District, Guyuan, Ningxia, China.
4 Department of Pathology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China.
5 Department of Gastroenterology, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China wangcdhl@fjmu.edu.cn.
6 Department of Gastroenterology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China.