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Korea Institute for Health and Social Affairs, 2009
Korea Institute for Health and Social Affairs, 2021
Korea Institute for Health and Social Affairs, 2023-06-30, Global Social Security Review 2023 No.여름 25, pp.135-139
Korea Institute for Health and Social Affairs, 2023-05-17
Korea Institute for Health and Social Affairs, 2024-03-21, Research in Brief, vol. 118, pp. 1 - 7