?:authorAffiliation
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[\'Department of Social Security, School of Public Administration, Hebei University of Economics and Business, Shijiazhuang 050061, China.\', \'Sau Po Centre on Ageing, The University of Hong Kong, Hong Kong, China.\', \'Department of Social Work and Social Policy, School of Sociology and Population Studies, Renmin University of China, Beijing 100872, China.\']
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