Department of Gastroenterology,Shanghai Tenth People's Hospital,Tongji University School of Medicine,Shanghai 200072,China;
Institute of Intestinal Disease,Tongji University School of Medicine,Shanghai 200072,China;
Department of Gastroenterology,Shanghai Tenth People's Hospital,Tongji University School of Medicine,Shanghai 200072,China;
Institute of Intestinal Disease,Tongji University School of Medicine,Shanghai 200072,China;