Gansu Provincial Hospital, Lanzhou University - The First Clinical Medical School, Lanzhou University - The First Clinical Medical School, Sun Yat-sen University (SYSU) - Center for Digestive Disease, Lanzhou University - The First Clinical Medical School, Lanzhou University - State Key Laboratory of Applied Organic Chemistry, Lanzhou University - The First Clinical Medical School, Lanzhou University - The First Clinical Medical School, Lanzhou University - The First Clinical Medical School, Lanzhou University - The First Department of General Surgery, Lanzhou University - The First Clinical Medical School, Lanzhou University - The First Clinical Medical School, Lanzhou University - The First Clinical Medical School, Lanzhou University - The First Clinical Medical School, Lanzhou University - The First Clinical Medical School, Lanzhou University - State Key Laboratory of Applied Organic Chemistry, Sun Yat-sen University (SYSU) - Clinical Research Center, Lanzhou University - The First Department of General Surgery, University of California, Davis - Division of Gastroenterology and Lanzhou University - The First Clinical Medical School