Affiliation: | aFirst Department of Surgery, Hyogo College of Medicine, Nishinomiya, Japan;bGastrointestinal Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA USA;cDepartment of Geriatric Medicine, Osaka University of Medical School, Osaka, Japan;dFirst Department of Surgery, Osaka University of Medical School, Osaka, Japan;eInstitute for Cellular and Molecular Biology, Osaka University of Medical School, Osaka, Japan |