1. Department of Nursing, Gimhae College, Gimhae, Korea.
2. College of Nursing, Pusan National University, Yangsan, Korea.
3. Ophthalmology, Otolaryngology and Dermatology of Korean Medicine, Pusan National University Korean Medicine Hospital, Yangsan, Korea.
4. Ophthalmology of Pusan National University Hospital, Yangsan, Korea.