1. Department of Psychiatry, Seoul National University Bundang Hospital , Seongnam , Republic of Korea
2. Department of Psychiatry, Seoul National University College of Medicine , Seoul , Republic of Korea
3. Department of Neurology, Seoul National University Bundang Hospital , Seongnam , Republic of Korea
4. Department of Neurology, Seoul National University College of Medicine , Seoul , Republic of Korea
5. Division of Statistics, Medical Research Collaborating Center, Seoul National University Bundang Hospital , Seongnam , Republic of Korea