1. College of Nursing, Jeju National University, Jeju, Korea
2. Health and Nursing Research Institute, Jeju National University, Jeju, Korea
3. Department of Philosophy, College of Humanities, Jeju National University, Jeju, Korea
4. Department of Dentistry, College of Medicine, Jeju National University, Jeju, Korea
5. UT Health San Antonio, School of Nursing, San Antonio, U.S.A.