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First-trimester maternal serum matrix metalloproteinase-9 (MMP-9) and adverse pregnancy outcome.
Poon LC, Nekrasova E, Anastassopoulos P, Livanos P, Nicolaides KH.
Prenat Diagn 2009;29:553-9. -
Serum CA125 at 11-14 weeks of gestation in women with morphologically normal ovaries.
Aslam N, Ong C, Woelfer B, Nicolaides K, Jurkovic D.
BJOG 2000;107:689-90.