1. Faculty of Human Relation; Tokai Gakuin University; Gifu Japan
2. Department of Radiological Sciences; Ibaraki Prefectural University of Health Sciences; Ibaraki Japan
3. Faculty of Health Sciences; Junshin Gakuen University; Fukuoka Japan
4. Department of Radiological Technology; Tokushima Red Cross Hospital; Tokushima Japan
5. Center for Life Science Technologies; RIKEN; Hyogo Japan
6. Graduate School of Health Sciences; Okayama University; Okayama Japan
7. Graduate School of Medicine; the University of Tokyo; Tokyo Japan