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When and how to use instrumental variables in palliative care research
Joan D Penrod1, Nathan E Goldstein, Partha Deb
1Center for Research on Health Care Across Site and Systems of Care, John J. Peters VA Medical Center, Bronx, New York 10468, USA. joan.penrod@mssm.edu
Journal of Palliative Medicine
|May 7, 2009
Abstract
No abstract available in PubMed .
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