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