1. Department of Nutrition, School of Nursing and Nutrition, Tenshi College, Sapporo, Japan;
2. Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan;
3. Graduate School of Medicine, Hokkdaido University, Sapporo, Japan;
4. PET Center, Ehime Hospital, Matsuyama, Japan;
5. LSI Sapporo Clinic, Sapporo, Japan.