1College of Nursing Science, Kyung Hee University, Seoul, Korea.
2National Assembly Research Service, Seoul, Korea.
3College of Nursing Science·East-West Nursing Research Institute, Kyung Hee University, Seoul, Korea.
© 2015 Korean Society of Nursing Science
This is an Open Access article distributed under the terms of the Creative Commons Attribution NoDerivs License. (http://creativecommons.org/licenses/by-nd/4.0/) If the original work is properly cited and retained without any modification or reproduction, it can be used and re-distributed in any format and medium.
This study was supported by the National Research Foundation of Korea in 2014 (NRF-2014R1A1A2057237).