Youran Lee1, Eunhee Cho2. 1. Duke University School of Nursing, 307 Trent Drive, Durham, NC, 27710, USA. 2. Mo-Im Kim Nursing Research Institute, Yonsei University College of Nursing, 50-1 Yonsei-ro, Seodaemoon-Gu, Seoul, 03722, South Korea. ehcho@yuhs.ac.