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Journal of Clinical Epidemiology
Volume 51, Issue 2
, Pages
69-79
, February 1998
A Study in Contrasts: Eligibility Criteria in a Twenty-Year Sample of NSABP and POG Clinical Trials
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PII: S0895-4356(97)00240-0
© 1998 Elsevier Science Inc. All rights reserved.
Next »
Journal of Clinical Epidemiology
Volume 51, Issue 2
, Pages
69-79
, February 1998
