[1] Korea Univ, Coll Med, Dept Psychiat, Seoul 135705, South Korea
[2] Dept Psychiat, Seoul, South Korea
[3] Korea Univ, Inst Human Behav & Gene, Seoul 135705, South Korea
[4] Korea Univ, Clin Res Ctr Depress, Seoul 135705, South Korea
[5] Korea Univ, Depress Ctr, Seoul 135705, South Korea