搜索结果: 1-1 共查到“法学 Contraceptive Failure Rates”相关记录1条 . 查询时间(0.062 秒)
Contraceptive Failure Rates：New Estimates From the 1995 National Survey of Family Growth
Contraceptive Failure Rates 1995 Family Growth
2009/9/15
Context: Unintended pregnancy remains a major public health concern in the United States. Information on pregnancy rates among contraceptive users is needed to guide medical professionals' recommendat...