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Moher D, Dulberg CS, Wells GA. (1994). Statistical power, sample size, and their reporting in randomized controlled trials. JAMA 272:122-4.
The editors are grateful to:
JAMA for allowing the James Lind Library to link to this and other articles of historical relevance (email to Iain Chalmers from Annette Flanagin, 29 August 2014).