1. Department of Integrative Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Korea.
2. Research Center of Behavioral Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Korea.
3. Division of Brain Disease, Center for Biomedical Science, National Institute of Health, Seoul 122-701, Korea.
4. Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Korea.