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Word: scalecomparison (lookup in dictionary) (lookup stats)
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Conclusive proof of a link between betacarotene and cancer, says Hennekens, will comeabout only through the completion of a large-scalecomparison like the Physicians Health Trial, inwhich researchers carefully isolate the effect ofbeta carotene from all other substances with whichit naturally occurs...

Author: By Adam L. Berger, | Title: Researchers Question Power of `Wonder Drug' | 12/6/1990 | See Source »

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