title: Recent versus historical trends in preterm birth in Canada.
authors.affiliation: Department of Neonatal Pediatrics, IWK-Grace Health Centre, Halifax, NS. ks.joseph@np.iwkgrace.ns.ca
authors.forename: K S
authors.initials: KS
authors.lastname: Joseph
authors.forename: M S
authors.initials: MS
authors.lastname: Kramer
mesh_terms: D002170:Canada / Q000453:epidemiology; D005260:Female; D005865:Gestational Age; D006801:Humans; D007752:Obstetric Labor, Premature / Q000453:epidemiology*; D011247:Pregnancy