1. Department of Neuropsychiatry, Bucheon Geriatric Medical Center, Republic of Korea
2. Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
3. Department of Psychiatry, National Center for Mental Health, Seoul, Republic of Korea
4. Institute of Human Behavioral Medicine, Medical Research Center, Seoul National University, Seoul, Republic of Korea
5. Department of Neuropsychiatry, Inje University Sanggye Paik Hospital , Seoul, Republic of Korea
6. Department of Neuropsychiatry, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea
7. Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
8. Department of Nuclear Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea
9. Department of Radiology, Seoul National University Hospital, Seoul, Republic of Korea
10. Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea