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Some thoughts on the true value of ultrasound.
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Ultrasound Obstet Gynecol 2007;30:671-4. -
Nuchal translucency and the risk of congenital heart disease.
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Relation between nuchal translucency thickness and prevalence of major cardiac defects in fetuses with normal karyotype.
Atzei A, Gajewska K, Huggon IC, Allan L, Nicolaides KH.
Ultrasound Obstet Gynecol 2005;26:154-7.