1Professor, Department of Nursing, Wonju College of Medicine, Yonsei University, Korea.
2Emeritus Professor, College of Nursing, Yonsei University, Korea.
3Professor, College of Nursing, Yonsei University, Korea.
© 2013 Korean Academy of Community Health Nursing
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
This work was supported by a research grant from Yonsei University Wonju College of Medicine (YUWCM-2009-47).
†The unanswered were excluded; ‡Disease code.