1. Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
2. Center for School Mental Health, Eulji University, Seoul, Korea.
3. Interdisciplinary Graduate Program in Social Welfare Policy, Yonsei University, Seoul, Korea.
4. Institute of Behavioral Sciences in Medicine, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Psychiatry, Hallym University Sacred Heart Hospital, Anyang, Korea.
6. Suicide and School Mental Health Institute, Hallym University, Anyang, Korea.
7. Department of Psychiatry, Nowon Eulji University Hospital, Eulji University School of Medicine, Seoul, Korea.