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Beijing Inst Technol, Sch Humanities & Social Sci, Dept Social Work, Shuyuan South 11 1-1-301,Gongchen Steet, Beijing 102401, Peoples R China Beijing Inst Technol, Sch Humanities & Social Sci, Dept Social Work, Shuyuan South 11 1-1-301,Gongchen Steet, Beijing 102401, Peoples R China