1Department of Nursing, Kyungbok College, Korea. jhkang@kyungbok.ac.kr
2Department of Nursing, Semuyng University, Korea.
3College of Nursing, Yonsei University, Korea.
4Department of Nursing, Chungnam University, Korea.
5College of Nursing, Korean National Open University, Korea. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/