1. Department of Psychology, The Catholic University of Korea College of Social Science, Bucheon, Republic of Korea.
2. Department of Psychiatry, Dasarang Central Hospital, Uiwang, Republic of Korea.
3. Department of Social Welfare with Addiction Rehabilitation, Eulji University of Korea, Seongnam, Republic of Korea.
4. College of Human Service, Hanshin University of Korea, Osan, Republic of Korea.
5. Addiction Clinic, Department of Psychiatry, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea.
6. Department of Psychiatry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.