1. School of Nursing, Faculty of Science, Medicine and Health, University of Wollongong, B41, R116, Northfields Avenue, Wollongong, NSW 2522, Australia
2. Department of Nursing, Taipei Medical University Hospital, Taipei, Taiwan.
3. School of Gerontology Health Management, Taipei Medical University, Taipei, Taiwan
4. School of Nursing and Midwifery, Western Sydney University, Campbelltown Campus, Buidling 7.G. 11 Locked Bag 1797, Penrith, NSW 2751 Australia