Neonatal mortality--United States, Canada, and Western Europe.
D001724:Birth Weight; D002170:Canada; D005006:Ethnicity; D005060:Europe; D005260:Female; D005865:Gestational Age; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D008423:Maternal Age; D011247:Pregnancy; D012537:Scandinavian and Nordic Countries; D012959:Socioeconomic Factors; D014481:United States