1. Total Healthcare Center, Kangbuk Samsung Hospital; Sungkyunkwan University; Goyang Korea
2. School of Medicine, Departments of Medicine, Graduate School; Kyung Hee University; Goyang Korea
3. Department of Preventive Medicine, School of Medicine; Kyung Hee University; Goyang Korea
4. Cancer Registration and Statistic Branch, National Cancer Control Institute, National Cancer Center; Goyang Korea
5. Mood Disorders Psychopharmacology Unit; University Health Network; Toronto Ontario Canada
6. Department of Psychiatry; University of Toronto; Toronto Ontario Canada
7. Department of Psychiatry, School of Medicine; Sungkyunkwan University; Seoul Korea