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The Long-Term Effects of a Peer-Led Sex Education Programme (RIPPLE): A Cluster Randomised Trial in Schools in England
- Judith Stephenson,
- Vicki Strange,
- Elizabeth Allen,
- Andrew Copas,
- Anne Johnson,
- Chris Bonell,
- Abdel Babiker,
- Ann Oakley,
- the RIPPLE Study Team
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- Published: November 25, 2008
- https://doi.org/10.1371/journal.pmed.0050224