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1
Teen birth rate continues to drop.青少年生育率持续下降。
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2
U.S. teen pregnancy: studies point to new prevention approaches.美国青少年怀孕问题：研究指向新的预防方法。
Netw Res Triangle Park N C. 1988 Fall;10(1):10.
3
House hearing on adolescent pregnancy focuses on social and economic costs.众议院关于青少年怀孕问题的听证会聚焦于社会和经济成本。
Wash Memo Alan Guttmacher Inst. 1992 Dec 3(19):1-2.
4
Teen pregnancy: progress meets politics.青少年怀孕：进步与政治相遇。
Guttmacher Rep Public Policy. 1999 Jun;2(3):6-9.
5
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Poor contraceptive use in the teenage years: situational and developmental interpretations.青少年时期避孕措施使用不当：情境与发展性解读
Adv Adolesc Mental Health. 1990;4:51-69.
7
Adolescent unintended pregnancy: the scope of the problem.青少年意外怀孕：问题的范围
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8
Teen pregnancy rates continue to decline.青少年怀孕率持续下降。
Contracept Technol Update. 1999 Jul;20(7):81-2.
9
Teens' contraceptive use marked by inconsistency.青少年使用避孕药具的情况存在不一致性。
Contracept Technol Update. 2000 Jun;21(6):74-5.
10
Public costs and policy implications of teenage childbearing.青少年生育的公共成本及政策影响。
Adv Adolesc Mental Health. 1990;4:265-80.
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