1. Faculty of Medicine Department of Neuropsychiatry Tottori University Yonago Japan
2. Division of Clinical Laboratory Tottori University Hospital Tottori Japan
3. Department of Psychiatry University of Iowa Carver College of Medicine Iowa City IA USA
4. Energy Technology Laboratories Osaka Gas Co., Ltd. Osaka Japan
5. Department of Psychiatry Teikyo University Chiba Medical Center Ichihara Japan
6. Watanabe Hospital Tottori Japan