Role of placebo factors in clinical trials with special focus on enrichment designs
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PII: S0304-3959(08)00424-7
doi:10.1016/j.pain.2008.07.027
© 2008 International Association for the Study of Pain. Published by Elsevier Inc. All rights reserved.
Refers to article:
- Response to: Long-term trials of pregabalin and duloxetine for fibromyalgia symptoms: How study designs can affect placebo factors , 15 September 2008

