A study of the association of the methylene-tetrahydrofolate reductase 677C>T polymorphism and pre-eclampsia in Sinhalese women in Sri Lanka. 14th World Congress of the International Society for the Study of Hypertension in Pregnancy, November 14-17, 2004. Vienna, (Abstracted in Hypertension in Pregnancy 2004,23(Suppl 1):20)