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Interpreting subgroup analyses: is a school-based asthma treatment program's effect modified by secondhand smoke

David G Bundy1, Molly Curtin Berkoff, Kristin E Ito

  • 1University of North Carolina, Chapel Hill 27599-7105, USA. david_bundy@med.unc.edu

Archives of Pediatrics & Adolescent Medicine
|May 5, 2004
PubMed
Summary

No abstract available in PubMed .

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