Distributia
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Steven BerkoffHimself - Narrator (voice)
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Ted KaptchukHimself - Harvard Medical School (as Prof Ted Kaptchuk)
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Irving KirschHimself - Harvard Medical School (as Prof Irving Kirsch)
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Chris BeedieHimself - Aberystwyth University (as Dr Chris Beedie)
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David KallmesHimself - Mayo Clinic (as Dr David Kallmes)
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Fabrizio BenedettiHimself - University of Turin (as Prof Fabrizio Benedetti)
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Tor WagerHimself - University of Colorado (as Prof Tor Wager)
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Jon StoesslHimself - University of British Columbia (as Prof Jon Stoessl)