1. Centre for Gerontological Nursing, School of Nursing, Hong Kong Polytechnic University, Hong Kong, People’s Republic of China
2. College of Nursing, University of the Philippines Manila, Manila, Philippines
3. School of Graduate Studies, Lingnan University, Hong Kong, People’s Republic of China
4. Hong Kong Christian Service, Hong Kong, People’s Republic of China
5. Faculty of Social Sciences, Hong Kong Baptist University, Hong Kong, People’s Republic of China
6. World Health Organization Collaborating Centre for Community Health Services, School of Nursing, Hong Kong Polytechnic University, Hong Kong, People’s Republic of China