1College of Nursing, The Catholic University of Korea, Seoul, Korea.
2Graduate School, The Catholic University of Korea, Seoul, Korea.
3College of Nursing, Jeju National University, Jeju, Korea.
© 2013 Korean Society of Nursing Science
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No.: 20110012271).