1Department of Nursing Science, College of Medicine, Chungbuk National University, Cheongju, Korea.
2Cheongju Community Addiction Management Center, Cheongju, Korea.
© 2016 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 work was supported by the research grant of Chungbuk National University in 2013
The authors declared no conflict of interest.
*M±SD=49.42±8.24; †M±SD=18.50±4.89.
*M±SD=49.42±8.24; †M±SD=18.50±4.89.