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Headache: the placebo effects in the control groups in randomized clinical trials; an analysis of systematic reviews

Femke M de Groot1, Annieke Voogt-Bode, Jan Passchier

  • 1Department of General Practice, Erasmus Medical Center, Rotterdam, The Netherlands.

Journal of Manipulative and Physiological Therapeutics
|June 7, 2011
PubMed
Abstract

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