Changes in birth characteristics over the period of policy changes (in 2013, 2015, and 2017).
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https://figshare.com/articles/dataset/Changes_in_birth_characteristics_over_the_period_of_policy_changes_in_2013_2015_and_2017_/11891802
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资源简介：
Changes in birth characteristics over the period of policy changes (in 2013, 2015, and 2017).
创建时间：
2020-02-24
