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한국보건사회연구원, 2017-04-15, Research in Brief, no. 22, pp. 1 - 4
한국보건사회연구원, 2017-03-31, Research in Brief, no. 21
한국보건사회연구원, 2017-06-15, Research in Brief, no. 24
한국보건사회연구원, 2017-02-28, Research in Brief, no. 20
