1Department of Nursing, Suwon Women's College, Suwon, Korea.
2Department of Nursing, Keukdong College, Eumseong, Korea.
3College of Nursing, Seoul National University, Seoul, Korea.
4Department of Nursing, Graduate School of Sahmyook University, Seoul, Korea.
5Department of Nursing, Sahmyook University, Seoul, Korea. love2hc@syu.ac.kr