1. Department of Social Work and Social Administration, The University of Hong Kong , Hong Kong , China
2. Department of Social and Behavioural Sciences, City University of Hong Kong , Hong Kong , China
3. Sau Po Centre on Ageing, The University of Hong Kong , Hong Kong , China
4. Department of Social Work, Hong Kong Baptist University , Hong Kong , China
5. Department of Urban Planning, School of Architecture, South China University of Technology , Guangzhou , China