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Nature 432, 43-45 (4 November 2004) | doi:10.1038/432043a; Published online 3 November 2004

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Fertility Waiting for the second coming

Jerome F. Strauss, III1 & Michael Kafrissen2

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Contraceptive research is seriously in need of revitalization.

Even developed countries have a staggeringly high incidence of unplanned pregnancies. In the United States about half are unintended at the time of conception, and many involve couples practising some form of contraception.

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