1. Department of Medical Technology, Kawasaki University of Medical Welfare, Kurashiki, Okayama, Japan;
2. Department of Psychiatry, Kawasaki Medical School, Kurashiki, Okayama, Japan;
3. Department of Neuropsychiatry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Okayama, Japan;
4. Department of Medical Technology, Graduate School of Health Sciences, Okayama University, Okayama, Okayama, Japan