1. Division of Nutrition and Metabolism, Kobe University Graduate School of Health Sciences, Kobe, Japan
2. Department of Nutrition, Kobe University Hospital, Kobe University School of Medicine, Kobe, Japan
3. Department of Medical Technology, Faculty of Health Sciences, Kagawa Prefectural College of Health Sciences, Takamatsu, Japan
4. Department of Surgery, Hyogo Cancer Center, Akashi, Japan
5. Department of Clinical Laboratory, Hyogo Cancer Center, Akashi, Japan
6. Yakult Central Institute for Microbiological Research, Tokyo, Japan