1. Department of Neuropsychiatry; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; Okayama Japan
2. Department of Laboratory Medicine and Pathology; Zikei Institute of Psychiatry; Okayama Japan
3. Department of Psychiatry; Kinoko Espoir Hospital; Kasaoka Japan
4. Department of Neuropsychiatry; Ehime University Graduate School of Medicine; Ehime Japan
5. Department of Psychiatry; Kawasaki Medical School; Kurashiki Japan
6. Dementia Research Project; Tokyo Metropolitan Institute of Medical Science; Tokyo Japan