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Investigation of maternal blood enriched for fetal cells: role in screening and diagnosis of fetal trisomies.
Al-Mufti R, Hambley H, Farzaneh F, Nicolaides KH.
Am J Med Genet 1999;2;85:66-75. -
Maternal serum S100 protein in normal and Down syndrome pregnancies.
Abraha HD, Noble PL, Nicolaides KH, Sherwood RA.
Prenat Diagn 1999;19:334-6.