1. Tokushima University/Medical Research, Tokushima, Japan
2. Japan Low Carbohydrate Diet Promotion Association, Kyoto, Japan
3. Takao Hospital, Kyoto, Japan
4. Department of Gastroenterology and Oncology, Institute of Biomedical Sciences, Tokushima University Graduate School, Japan
5. Muneta Maternity Clinic, Chiba, Japan