作者单位:Division of Nursing, College of Medicine, Hallym University, 1 Hallymdaehak-gil, Chuncheon, Gangwon[1]Department of Nursing, College of Medicine, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan 680[2]College of Nursing, Sungshin University, 76 Ga-gil 55 Dobong-ro, Kangbuk-gu, Seoul 142-732, South[3]College of Nursing, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 137-701[4]