Study evaluates placebo effectiveness

Harvard Medical School scientists who usually use placebos to test a new treatment's effectiveness have conducted a trial testing placebos.

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<p><a href="http://www.physorg.com/news10439.html">Study evaluates placebo effectiveness</a></p> <p>Harvard Medical School scientists who usually use placebos to test a new treatment's effectiveness have conducted a trial testing placebos. </p>