[1]Department of Gastroenterology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China,Department of Hepatology and Gastroenterology, Tianjin Third Central Hospital of Tianjin Medical University, Tianjin 300070, China;
[2]Department of Hepatology and Gastroenterology, Tianjin Third Central Hospital of Tianjin Medical University, Tianjin 300070, China;
[3]Department of Gastroenterology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China;
