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Jackson RS, Amdur RL, White JC, Macsata RA.Jackson RS, et al.J Am Coll Surg. 2012 Jan;214(1):68-80. doi: 10.1016/j.jamcollsurg.2011.09.016. Epub 2011 Nov 12.J Am Coll Surg. 2012.PMID: 22079879