‘Cancer’ is, in truth, a variety of diseases.857 Viewing it as a single disease that will yield to a single approach is no more logical than viewing neuropsychiatric disease as a single entity that will respond to one strategy. It is unlikely that we will soon see a ‘magic bullet’ for the treatment of cancer. But it is just as unlikely that there will be a magic bullet of prevention or early detection that will knock out the full spectrum of cancers. . . . We are making progress. Although we also have a long way to go, it is facile to claim that the pace of favorable trends in mortality
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