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Maclean KA, Becker AK, Chang SD, Harris AC.Maclean KA, et al. Among authors: chang sd.Can Assoc Radiol J. 2013 Nov;64(4):319-24. doi: 10.1016/j.carj.2012.07.002. Epub 2012 Dec 23.Can Assoc Radiol J. 2013.PMID: 23267519Free article.Review.