1. Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
2. Department of Pathology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
3. Department of Molecular Cell Physiology and Bio-Ionomics, Graduate School of Medical Science,Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
4. Japan Institute for Food Education and Health, St. Agnes’ University, Kyoto 602-8013, Japan