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Korea Institute for Health and Social Affairs, 2020-06-26, Research in Brief, no. 59, pp. 1 - 8
한국보건사회연구원, 2018-02, Research in Brief, no. 28, pp. 1 - 3
한국보건사회연구원, 2015-09-30, Research in Brief, no. 10, pp. 1 - 5
