1. Department of Psychiatry, Uijeongbu St. Mary’s Hospital, The Catholic University of Korea College of Medicine, Uijeongbu, Korea
2. Department of Preventive Medicine, The Catholic University of Korea College of Medicine, Seoul, Korea
3. Department of Psychiatry, St. Paul’s Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
4. Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul, Korea