搜索结果: 1-2 共查到“性科学 First Intercourse”相关记录2条 . 查询时间(0.086 秒)
Factors Affecting British Teenagers' Contraceptive Use at First Intercourse:The Importance of Partner Communication
British Teenagers First Intercourse Contraceptive Use Partner Communication
2009/9/17
CONTEXT: Despite the growing body of knowledge about teenager's sexual and contraceptive behavior in the United Kingdom, much quantitative work has failed to consider the broader social contexts in wh...
![](http://www.firstlight.cn/upload/imgfile/20084/14/200841412559.jpg)
Seasonality of Premarital First Intercourse among Brazilian Youth(图)
Brazilian Youth sexual health
2008/4/14
Strengthening of youth-oriented reproductive and sexual health services requires an understanding of the population at risk and their patterns of behaviour. Seasonal clustering of the timing of premar...