1. Centre for Gerontological Nursing, School of Nursing, Hong Kong Polytechnic University, Hong Kong SAR, Kowloon, China
2. College of Nursing, University of Santo Tomas, Manila, Philippines
3. College of Nursing, University of the Philippines-Manila, Manila, Metro Manila, Philippines
4. World Health Organization Collaborating Centre for Community Health Services, School of Nursing, Hong Kong Polytechnic University, Hong Kong SAR, Kowloon, China