1. Department of Psychiatry, Myongji Hospital, Hanyang University Medical Center, Goyang, Korea.
2. Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.
3. Department of Psychiatry, Jeju National University Hospital, Jeju National University College of Medicine, Jeju, Korea.
4. Department of Psychiatry, Sanggye Paik Hospital, College of Medicine, Inje University, Seoul, Korea.
5. Department of Psychiatry, Chung-Ang University College of Medicine, Seoul, Korea.
6. Department of Psychiatry, Keyo Hospital, Uiwang, Korea.
7. Department of Psychiatry, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Gyeongju, Korea.
8. Department of Psychiatry, College of Medicine, Daegu Catholic University, Daegu, Korea.
9. Department of Psychiatry, Jeonbuk National University Hospital, Jeonbuk National University Medical School, Jeonju, Korea.
10. Department of Psychiatry, Wonkwang University Hospital, Wonkwang University School of Medicine, Iksan, Korea.
11. Department of Psychiatry, Iksan Hospital, Iksan, Korea.
12. Department of Psychiatry, Naju National Hospital, Naju, Korea.
13. Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Korea.