(Q34540510)
Statements
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Matching for Several Sparse Nominal Variables in a Case-Control Study of Readmission Following Surgery (English)
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Rachel R Kelz
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Caroline E Reinke
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José R Zubizarreta
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Jeffrey H Silber
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Paul R Rosenbaum
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1 October 2011
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65
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4
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229-238
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Identifiers
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