Canadian Perinatal Surveillance System.
Levitt
C
C
D002170:Canada / Q000453:epidemiology; D005260:Female; D006801:Humans; D007229:Infant Welfare; D007231:Infant, Newborn; D008429:Maternal Welfare; D011159:Population Surveillance / Q000379:methods*; D011247:Pregnancy; D011256:Pregnancy Outcome