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Kamotani Y, Lee WM, Arger PH, Cary TW, Sehgal CM.Kamotani Y, et al. Among authors: sehgal cm.Ultrasound Med Biol. 2003 Jul;29(7):977-84. doi: 10.1016/s0301-5629(03)00054-1.Ultrasound Med Biol. 2003.PMID: 12878243