1. Department of Nursing, Chung-Ang University, Seoul, Korea.
2. Department of Preventive Medicine, University of Ulsan College of Medicine, Seoul, Korea.
3. Department of Nursing, College of Nursing, Inje University, Gimhae, Korea.
4. Department of Preventive Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
5. Department of Preventive Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.