00482nas a2200169   4500000000100000000000100001008004100002100001300043700001600056700001500072700001200087700001500099245014800114300001100262490000700273022003200280       2006                            d1 aJ. Hardy1 aB. Leaderer1 aT. Holford1 aG. Hall1 aM. Bracken00aSafety of medications prescribed before and during early pregnancy in a cohort of 81,975 mothers from the UK General Practice Research Database  a555-640 v15  a1053-8569 (Print) 1053-8569