1College of Nursing, Chonbuk National University, Cheonju, Korea.
2College of Nursing, Chonnam National University, Gwangju, Korea.
3Department of Nursing, Changwon National University, Changwon, Korea.
4Department of Nursing, Asan Medical Center, Seoul, Korea. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/