Mistry, Hiten D., Mather, Joanna, Ramsay, Margaret M., Kurlak, Lesia O., Symonds, Michael E., Broughton Pipkin, Fiona, "Homocysteine and folate plasma concentrations in mother and baby at delivery after pre-eclamptic or normotensive pregnancy: influence of parity", Pregnancy Hypertension, 2011