Central South University - Department of Gastroenterological Surgery, Central South University - Department of Gastroenterological Surgery, Washington University in St. Louis - Department of Surgery, Department of Mathematical Health Science, Graduate School of Medicine, Osaka University, Washington University in St. Louis - Department of Surgery, Central South University - Department of Gastroenterological Surgery, Washington University in St. Louis - Department of Surgery, Central South University - Department of Gastroenterological Surgery, Washington University in St. Louis - Department of Surgery, Washington University in St. Louis - Department of Surgery, Washington University in St. Louis - Department of Surgery, Washington University in St. Louis - Department of Surgery, Washington University in St. Louis - Department of Surgery, The University of Osaka - Department of Gastroenterological Surgery, Department of Gastroenterological Surgery, Osaka International Cancer Institute, Central South University - Department of Gastroenterological Surgery, Central South University - Department of Gastroenterological Surgery, Department of Mathematical Health Science, Graduate School of Medicine, Osaka University, The University of Osaka - Department of Gastroenterological Surgery, The University of Osaka - Department of Gastroenterological Surgery and Independent