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  • Guttmacher Institute
  • www.guttmacher.org
  • Affiliate of pro-choice Planned Parenthood Federation of America. Researches issues related to sexuality, reproduction, contraception, and abortion. Publishes a journal called Family Planning Perspectives.
4.3
(si*)
>10
6
  • It's Your Sex Life
  • www.itsyoursexlife.com
  • Information and facts about sex and contraception. Provided by M-TV.
4.2
(si*)
<5
6
4.2
(si*)
>60
6
3.9
(si*)
>60
5
  • Sex Your Brain
  • www.spermbrain.com
  • Sex trivia questions, quizzes, tests and surveys unravel the scientific mysteries of human sexuality.
3.7
(1)
-
4
3.3
(si*)
-
4
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