1. College of Nursing, Gachon University, Incheon, South Korea.
2. Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea.
3. Gachon University Gil Medical Center, Incheon, Korea.
4. Georgia Baptist College of Nursing, Mercer University, Atlanta, Georgia, USA.
5. Department of Nursing, College of Medicine, Dongguk University, Gyeongju-si, South Korea.