1 Department of Nursing Science, College of Medicine, Chungbuk National University, Cheongju, Korea.
2 Department of Nursing, Soonchunhyang University, Cheonan, Korea.
3 College of Nursing, Gachon University, Incheon, Korea.
4 Division of Infectious Diseases, Department of Internal Medicine, Bucheon St. Mary's Hospital, Bucheon, Korea.
5 Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea. jhyoo@catholic.ac.kr.