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Confounding by indication: the case of calcium channel blockers

M M Joffe1

  • 1Division of Biostatistics, Department of Biostatistics and Epidemiology, Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania School of Medicine, 602 Blockley Hall, 423 Guardian Drive, Philadelphia, PA 19104-6021, USA.

Pharmacoepidemiology and Drug Safety
|November 26, 2008
PubMed
Abstract

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