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. 2014 Apr 19;23(7):589–599. doi: 10.1136/bmjqs-2013-002223

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Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions

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Key aspects of the American College of Surgeons National Surgical Quality Improvement Project (ACS NSQIP). *Surgeons selected the content, make decisions about changes in the way data are collected and analysed, and they provide oversight.