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