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Thapa MM, Iyer RS, Gross JA.Thapa MM, et al.Can Assoc Radiol J. 2013 May;64(2):101-7. doi: 10.1016/j.carj.2012.11.005. Epub 2013 Feb 14.Can Assoc Radiol J. 2013.PMID: 23415715Free article.No abstract available.