1. Department of Psychiatry, Ajou University School of Medicine, Suwon, Korea
2. Department of Psychiatry, School of Medicine, Ewha Womans University, Seoul, Korea
3. Department of Psychiatry, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, Korea
4. Department of Psychiatry, Eulji University School of Medicine, Eulji University Eulji Hospital, Seoul, Korea
5. The ADD Centre and Biofeedback Institute of Toronto, Toronto, Canada
6. Department of Psychiatry, Gyeongsang National University School of Medicine, Gyeongsang National University Changwon Hospital, Changwon, Korea
7. Department of Psychiatry, Seonam University School of Medicine, Myongji Hospital, Goyang, Korea