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has major subject area list
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Noise; Obstetrics; Ultrasonography, Prenatal
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information resource reference
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A comparison between acoustic output indices in 2D and 3D/4D ultrasound in obstetrics. Ultrasound Obstet Gynecol. 2007 Mar; 29(3):326-8.
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label
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A comparison between acoustic output indices in 2D and 3D/4D ultrasound in obstetrics.
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