1. Department of Psychiatry, Korea University College of Medicine,Seoul, Republic of Korea.
2. Department of Medicine, Korea University School of Medicine, Seoul, Republic of Korea.
3. Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea.
4. Department of Psychiatry, Seoul National University College of Medicine,Seoul, Republic of Korea.
5. Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.