Surgery
Volume 145, Issue 6 , Pages 610-616 , June 2009

Research based on administrative data

,Accepted 10 March 2009.

References 

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PII: S0039-6060(09)00132-9

doi: 10.1016/j.surg.2009.03.005

Surgery
Volume 145, Issue 6 , Pages 610-616 , June 2009

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