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Haussen DC, Katsnelson M, Rodriguez A, Campo N, Campo-Bustillo I, Romano JG, Koch S.Haussen DC, et al.J Clin Ultrasound. 2012 Nov-Dec;40(9):554-8. doi: 10.1002/jcu.21944. Epub 2012 May 25.J Clin Ultrasound. 2012.PMID: 22638984