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Muehlschlegel JD, Perry TE, Liu KY, Fox AA, Collard CD, Shernan SK, Body SC.Muehlschlegel JD, et al. Among authors: shernan sk.Anesth Analg. 2010 Nov;111(5):1101-9. doi: 10.1213/ANE.0b013e3181dd9516. Epub 2010 May 10.Anesth Analg. 2010.PMID: 20457766Free PMC article.