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Miller DL, Smith NB, Bailey MR, Czarnota GJ, Hynynen K, Makin IR; Bioeffects Committee of the American Institute of Ultrasound in Medicine.Miller DL, et al.J Ultrasound Med. 2012 Apr;31(4):623-34. doi: 10.7863/jum.2012.31.4.623.J Ultrasound Med. 2012.PMID: 22441920Free PMC article.Review.