Department of Gastroenterology, the First Affiliated Hospital, Fujian Medical University, Fuzhou, China. Fujian Clinical Research Center for Liver and Intestinal Diseases, Fuzhou, China. Department of Gastroenterology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China. Department of Rheumatology, the First Affiliated Hospital, Fujian Medical University, Fuzhou, China. Department of Gastroenterology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China. Department of Gastroenterology, the First Affiliated Hospital, Fujian Medical University, Fuzhou, China. wangcdhl@fjmu.edu.cn. Fujian Clinical Research Center for Liver and Intestinal Diseases, Fuzhou, China. wangcdhl@fjmu.edu.cn. Department of Gastroenterology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China. wangcdhl@fjmu.edu.cn.