1. College of Nursing, Chungnam National University, Daejeon, Korea.
2. Department of Nursing, Yong-In Songdam College, Yong-In, Korea.
3. Department of Nursing, Graduate School, Chungnam National University, Daejeon, Korea.
4. Department of Neuropsychiatry, Seoul National University Hospital · Seoul Metropolitan Center for Dementia, Seoul, Korea.