Steegers-Theunissen, R.P.M.

study pregnancy women birth weight growth netherland smoking group mother association level blood rotterdam effect birth weight generation r study factor children difference health table folate measurement control model result month folic intake erasmu signi concentration population analysis vitamin outcome ultrasound delivery generation reference child disease development pressure score heart patient university signi ficantly volume number defect period cohort sample questionnaire value erasmus mc preeclampsia obstetric dutch obstet postnatal trimester journal characteristic screening center department polymorphism protein folic acid body mass index genotype length infant homocysteine pattern syndrome