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Ann Surg. 2015 Jul;262(1):e32. doi: 10.1097/SLA.0000000000000433.

Reply to Letter: "Causal Inference in Observational Studies in Surgery".

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1
Department of General and Vascular Surgery Gundersen Health System La Crosse, WI Department of Surgery Research Gundersen Medical Foundation La Crosse, WI Department of General and Vascular Surgery Gundersen Health System La Crosse, WI snkothar@gundluth.org.
PMID:
24368659
DOI:
10.1097/SLA.0000000000000433
[Indexed for MEDLINE]
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