1. Department of Medical Technology, Graduate School of Health Sciences, Okayama University, Okayama 700-8558, Japan
2. Department of Medical Technology, Kawasaki College of Allied Health Professions, Okayama 701-0194, Japan
3. Department of Psychiatry, Kawasaki Medical University, Kurashiki 701-0192, Japan
4. Department of Neuropsychiatry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan