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A case-control study of maternal periconceptual and pregnancy recreational drug use and fetal malformation using hair analysis.
David AL, Holloway A, Thomasson L, Syngelaki A, Nicolaides K, Patel RR, Sommerlad B, Wilson A, Martin W, Chitty LS.
PLoS One 2014;9:e111038. pdf -
Some thoughts on the true value of ultrasound.
Nicolaides KH.
Ultrasound Obstet Gynecol 2007;30:671-4.