[1] Soonchunhayng Univ Hosp Cheonan, Nursing Dept, Cheonan, South Korea
[2] Yonsei Univ, Wonju Coll Med, Dept Nursing, Seoul, South Korea
[3] Dongguk Univ, Coll Med, Dept Nursing, Seoul, South Korea
[4] Chung Ang Univ, Red Cross Coll Nursing, 84 Heukseok Ro, Seoul, South Korea