1. Department of Psychiatry; Kinoko Espoir Hospital; Okayama Japan
2. Department of Neuropsychiatry; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; Okayama Japan
3. Department of Laboratory Medicine and Pathology; Zikei Institute of Psychiatry; Okayama Japan
4. Department of Psychiatry; Zikei Hospital; Okayama Japan