Affiliation: | 1. Department of Surgery, Onomichi General Hospital, Hiroshima, Japan;2. Department of Surgery, Onomichi General Hospital, Hiroshima, Japan Department of Gastroenterological and Transplant Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan;3. Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan;4. Department of Gastroenterological and Transplant Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan |