1. Department of Gastroenterology/Biological Safety Science, Kyoto Prefectural University of Medicine, Kyoto;
2. Department of Second Surgery, Graduate School of Medicine, Osaka City University, Osaka;
3. Department of Medical Life Systems, Faculty of Life and Medical Sciences, Doshisha University, Kyoto; and
4. Department of Anti-Aging food Science, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, Japan