Affiliation: | 1. Department of Digestive Surgery, International University of Health and Welfare Shioya Hospital, Tochigi, Japan;2. Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan;3. Department of Diagnostic Pathology, Ota Memorial Hospital, SUBARU Health Insurance Society, Ota, Japan;4. Department of Digestive Surgery, International University of Health and Welfare Shioya Hospital, Tochigi, Japan Department of Frontier Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan |