1. School of Medicine; Department of Preventive Medicine; Eulji University; Daejeon Korea
2. School of Medicine; Department of Psychiatry; Kyunghee University; Seoul Korea
3. School of Medicine; Department of Neuropsychiatry; Eulji University; Daejeon Korea
4. College of Medicine; Department of Psychiatry; Konkuk University; Seoul Korea
5. College of Medicine; Department of Psychiatry; Korea University; Ansan City Gyunggi-Do Korea
6. College of Medicine; Department of Psychiatry; Inje University; Goyang City Gyunggi-Do Korea
7. Department of Psychiatry; Korea University; Ansan City Gyunggi-Do Korea
8. Department of Psychiatry; Korea University; Seoul Korea
9. College of Medicine; Department of Psychiatry; The Catholic University of Korea; Seoul Korea
10. College of Medicine; Department of Psychiatry; Anam Hospital; Korea University; Seoul Korea