摘要：An evaluation of risks versus benefits from new products should be encouraged, even when dealing with agents which may cause cancer or malformations in laboratory animals, because there is evidence that safety thresholds exist even for such exposures. However, it is not easy to describe risk and benefit in comparable terms when they may involve generations to come and events in the future. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (873K), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References . 1 2 3 4 5
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