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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 -
Maternal serum placental growth factor isoforms 1 and 2 at 11-13, 20-24 and 30-34 weeks' gestation in late-onset pre-eclampsia and small for gestational age neonates.
Nucci M, Poon LC, Demirdjian G, Darbouret B, Nicolaides KH.
Fetal Diagn Ther 2014;35:249-57. pdf