-
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. -
Exhaled nitric oxide concentration and amniotic fluid nitrite concentration during pregnancy.
Morris-NH, Carroll S, Nicolaides KH, Steer PJ, Warren JB.
Eur J Clin Invest 1995;25:138-41.