Difference between study parents with and without details available of maternal grandmother's smoking history.
收藏数据链接：
官方服务：
资源简介：
aMaximum n possible: Denominators for specific pregnancy and outcome variables vary due to missing data.bRestricted to live-births, thus excludes miscarriages and late fetal deaths.cmean ± SD [n].
创建时间：
2015-12-02
