Schulz KF, Chalmers I, Grimes DA, Altman DG (1994).

Assessing the quality of randomization from reports of controlled trials published in obstetrics and gynecology journals. JAMA 272:125-8.

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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).