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Post-coital administration of levonorgestrel and post-fertilization events in the new-world monkey Cebus apella
Universidad de los Andes, Santiago, Chile
Email: pmgdr@manquehue.net
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Sir,
The paper by Ortiz et al. (2004)
, which concludes that Post-coital administration of levonorgestrel does not interfere with post-fertilization events in