| Affiliation: | 1. Department of Surgery, Kyoto University, Kyoto, Japan;2. Department of Healthcare Epidemiology, School of Public Health, Graduate School of Medicine, Kyoto University, Kyoto, Japan;3. Centre for Innovative Research for Communities and Clinical Excellence, Fukushima Medical University, Fukushima, Japan;4. Department of Public Health, University of Tokyo Graduate School of Medicine, Tokyo, Japan;5. Department of Surgery, Tochigi Cancer Centre, Utsunomiya, Tochigi, Japan;6. Department of Surgical Oncology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan |
