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Potential bias caused by control selection in secondary data analysis: nonaspirin nonsteroidal anti-inflammatory

Nam-Kyong Choi1, Seokyung Hahn, Byung-Woo Yoon

  • 1Department of Preventive Medicine, College of Medicine, Seoul National University, Seoul, Korea.

Pharmacoepidemiology and Drug Safety
|January 6, 2010
PubMed
Abstract

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