Use of placebo controls in the evaluation of surgery: systematic review.
OBJECTIVE: To investigate whether placebo controls should be used in the evaluation of surgical interventions. DESIGN: Systematic review. DATA SOURCES: We searched Medline, Embase, and the Cochrane Controlled Trials Register from their inception to November 2013. STUDY SELECTION: Randomised clinical...
| Autori principali: | , , , , , , , , , |
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| Natura: | Journal article |
| Lingua: | English |
| Pubblicazione: |
BMJ Publishing Group
2014
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| Soggetti: |