1. Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea
2. Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
3. Department of Psychiatry, Woori-Seongsim Psychiatric Clinic, Siheung, Korea
4. Department of Psychiatry, Gyeongsang National University Hospital, Jinju, Korea
5. Department of Psychiatry, Yonsei University Wonju Severance Christian Hospital, Wonju, Korea
6. Department of Psychiatry, Seoul National University, College of Medicine, Seoul, Korea
7. Department of Neuropsychiatry, Inje University Sanggye Paik Hospital, Seoul, Korea
8. Department of Psychiatry, School of Medicine, Konkuk University, Konkuk University Medical Center, Seoul, Korea
9. Department of Neuropsychiatry, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
10. Department of Neuropsychiatry, Gyeonggi Provincial Hospital for the Elderly, Yongin, Korea
11. Department of Neuropsychiatry, Kangwon National University Hospital, Chuncheon, Korea
12. Department of Psychiatry, Chungnam National University Hospital, Daejeon, Korea
13. Department of Psychiatry, Dankook University Hospital, Cheonan, Korea
14. Department of Psychiatry, Dongguk University Gyeongju Hospital, Gyeongju, Korea
15. Department of Psychiatry, Gyeongsang National University, School of Medicine, Jinju, Korea
16. Department of Psychiatry, Konkuk University, School of Medicine, Chungju, Korea
17. Department of Neuropsychiatry, Jeju National University Hospital, Jeju, Korea
18. Department of Brain and Cognitive Sciences, Seoul National University, College of Natural Sciences, Seoul, Korea