title: Pharmacoepidemiological studies in pregnancy: the need for international collaboration.
authors.affiliation: The Danish Epidemiology Science Centre at the Department of Epidemiology and Social Medicine, Aarhus University, Høegh Guldbergsgade 10, 8000 Aarhus C, Denmark.
authors.forename: H T
authors.initials: HT
authors.lastname: Sørensen
authors.forename: L
authors.initials: L
authors.lastname: de Jong-van den Berg