00406nas a2200157   4500000000100000000000100001008004100002100001600043700001600059700001400075700001600089245009500105300000900200490000700209022003200216       2014                            d1 aR. Charlton1 aJ. Snowball1 aC. Sammon1 aC. de Vries00aThe Clinical Practice Research Datalink for drug safety in pregnancy research: an overview  a83-90 v69  a0040-5957 (Print) 0040-5957