Duk-In Jon
Department of Psychiatry, Hallym University College of Medicine, Anyang, Korea

Won-Myong Bahk
Department of Psychiatry, Yeouido St Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul, Korea

Se-Hoon Shim
3 Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Soonchunhyang University, Cheonan, Korea

Young Sup Woo
Department of Psychiatry, Yeouido St Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul, Korea

Eunsung Lim
Department of Psychiatry, Shinsegae Hospital, Kimje, Korea

Bo-Hyun Yoon
Department of Psychiatry, Naju National Hospital, Naju, Korea