jnas The Journal of Nurses Academic Society 0378-004X Korean Society of Nursing Science 10.4040/jnas.1983.13.1.61 jnas-13-61 Original Article English title not found 121983 18121983 13 1 61 68 Copyright © 1983 Korean Society of Nursing Science 1983 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.