The University of Osaka - Department of Gastroenterological Surgery, The University of Osaka - Department of Gastroenterological Surgery, Osaka University - Genome Information Research Center, The University of Osaka - Department of Gastroenterological Surgery, The University of Osaka - Department of Molecular Pathology, The University of Osaka - Department of Molecular Pathology, The University of Osaka - Department of Gastroenterological Surgery, Hiroshima City North Medical Center Asa Citizens Hospital - Department of Surgery, The University of Osaka - Department of Molecular Pathology, The University of Osaka - Department of Molecular Pathology, The University of Osaka - Department of Gastroenterological Surgery, The University of Osaka - Department of Gastroenterological Surgery, The University of Osaka - Department of Gastroenterological Surgery, The University of Osaka - Department of Gastroenterological Surgery, Osaka Police Hospital - Department of Surgery, Hiroshima University - Department of Clinical and Molecular Genetics, Kyushu University - Kyushu University Hospital, The University of Osaka - Department of Gastroenterological Surgery, The University of Osaka - Department of Gastroenterological Surgery and The University of Osaka - Department of Gastroenterological Surgery