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Korea Institute for Health and Social Affairs, 2020-02, Research in Brief, no. 48, pp. 1 - 8
한국보건사회연구원, 2020-02-17, 보건복지 Issue & Focus 371호, pp.1-10
한국보건사회연구원, 2020-04-08, 보건복지 Issue & Focus 381호, pp.1-11
