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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 -
Choroid plexus cyst, intracardiac echogenic focus, hyperechogenic bowel and hydronephrosis in screening for trisomy 21 at 11 + 0 to 13 + 6 weeks.
Dagklis T, Plasencia W, Maiz N, Duarte L, Nicolaides KH.
Ultrasound Obstet Gynecol 2008;31:132-5.