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One clue was provided six years ago by four researchers who, using the Freedom of Information Act, obtained FDA reviews of every placebo-controlled clinical trial submitted for initial approval of Prozac, Paxil, Zoloft, Celexa, Serzone, and Effexor. They found that on average, placebos were 80 percent as effective as the drugs.
– Drug Companies & Doctors: A Story of Corruption - The New York Review of Books
