1. Department of Psychiatry and Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, Korea.
2. Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Psychiatry, Hangang Sacred Heart Hospital, Hallym University, Seoul, Korea.
4. Biomedical Statistics Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, Korea.
5. Department of Psychiatry, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.