1. Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
2. Hubei Clinical Center & Key Lab of Intestinal & Colorectal Diseases, Wuhan, 430071, China
3. Department of Gastroenterology, The Central Hospital of Enshi Autonomous Prefecture, Enshi, 445000, China
4. Hepatobiliary Surgery, The Central Hospital of Enshi Autonomous Prefecture, Enshi, 445000, China