Descriptive statistics on the study population, N (%)a.
收藏Figshare2015-12-02 更新2026-04-29 收录
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aPercentages are relative to all live births. Categories not shown (bData for the year 2000 (shown here and as used in the analyses) consist of children conceived in January through March.
创建时间：
2015-12-02
