One of the largest long-term clinical trials in the United States,which encompassed about 14,000 male physicians ages 50 and older,found that the incidence of cancer could be decreased by 8 percent by taking a common combination of essential ________ and ________ daily,compared with taking a placebo.

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The Answer of One of the largest long-term clinical trials in the United States,which encompassed about 14,000 male physicians ages 50 and older,found that the incidence of cancer could be decreased by 8 percent by taking a common combination of essential ________ and ________ daily,compared with taking a placebo.

One of the Largest Long-Term Clinical Trials in the United