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Gessner R, Lukacs M, Lee M, Cherin E, Foster FS, Dayton PA.Gessner R, et al.IEEE Trans Ultrason Ferroelectr Freq Control. 2010 Aug;57(8):1772-81. doi: 10.1109/TUFFC.2010.1615.IEEE Trans Ultrason Ferroelectr Freq Control. 2010.PMID: 20679006Free PMC article.