1College of Nursing, Seoul National University, Korea.
2Department of Nursing, College of Medicine, Dongguk University, Korea.
3College of Nursing, Kyung Hee University, Korea.
4Department of Nursing, College of Medicine, Chung Ang University, Korea.
5Department of Nursing, College of Medicine, Kangwon National University, Korea. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/