1College of Nursing, Korea University, Korea.
2Department of Informational Statistics, HoSeo University, Korea.
3Department of Psychiatry, Medical College, Chung-ang University, Korea.
4Department of Psychiatry, University of Ulsan College of Medicine, Asan Medical Center, Korea.
5Korea University, College of Nursing, Korea.
6Department of Psychiatry, Medical College, Chung-ang University, Korea.
7Department of Psychiatry, University of Ulsan College of Medicine, Asan Medical Center, Korea.
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