1. College of Nursing·Research Institute of Nursing Science, Seoul National University, Seoul, Korea.
2. Research Institute of Nursing Science, Seoul National University, Seoul, Korea.
3. College of Nursing, Gachon University, Inchon, Korea.
4. Department of Nursing, Bucheon University, Bucheon, Korea.
5. College of Nursing, Dankook University, Cheonan, Korea.