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Is it always unethical to use a placebo in a clinical trial?
Stang A, Hense HW, Jöckel KH, Turner EH, Tramèr MR. Stang A, et al. Among authors: tramer mr. PLoS Med. 2005 Mar;2(3):e72. doi: 10.1371/journal.pmed.0020072. Epub 2005 Mar 29. PLoS Med. 2005. PMID: 15783259 Free PMC article.
Number needed to treat (or harm).
Tramèr MR, Walder B. Tramèr MR, et al. World J Surg. 2005 May;29(5):576-81. doi: 10.1007/s00268-005-7916-8. World J Surg. 2005. PMID: 15827840
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