1. School of Nursing, College of Medicine, Chang Gung University, Taoyuan, Taiwan, R.O.C
2. Department of Nursing, New Taipei Municipal Tu-Cheng Hospital, New Taipei, Taiwan, R.O.C
3. Department of Nursing, Linkou Branch, Chang Gung Memorial Hospital, Taoyuan, Taiwan, R.O.C
4. Department of Health Management, I-Shou University, Kaohsiung City, Taiwan, R.O.C
5. School of Nursing, Chang Gung University of Science and Technology, Tao-Yuan County, Taiwan, R.O.C
6. Taipei Medical University, Taipei
7. Department of Ophthalmology, Chang Gung Memorial Hospital, Keelung, Taiwan, R.O.C