title: The need for cross-cultural comparisons.
authors: Eleanor Krassen
authors: EK
authors: Covan
mesh_terms: D000328:Adult; D017677:Age Distribution; D000416:Alberta / Q000453:epidemiology; D003431:Cross-Cultural Comparison; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008423:Maternal Age; D008875:Middle Aged; D007752:Obstetric Labor, Premature / Q000453:epidemiology*; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology*; D018566:Pregnancy, High-Risk; D012107:Research Design; D012307:Risk Factors; D016387:Women's Health