1Department of Nursing, Honam University, Gwangju, Korea.
2Department of Nursing, Mokpo National University, Muan, 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 paper was supported by Research Funds of Mokpo National University in 2013 (No. 2013-0166).
The authors declared no conflict of interest.