kw.\*:("Abstinence Contraception Sexual behaviors Teen pregnancy")
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Can changes in sexual behaviors among high school students explain the decline in teen pregnancy rates in the 1990s?SANTELLI, John S; ABMA, Joyce; VENTURA, Stephanie et al.Journal of adolescent health. 2004, Vol 35, Num 2, pp 80-90, issn 1054-139X, 11 p.Article
