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Age Factors
Americas
Birth Rate
Congenital Abnormalities
Congenital, Hereditary, and Neonatal Diseases and Abnormalities
Demography
Developed Countries
Developing Countries
Disease
Economics
England
Europe
Fertility
Fetal Death
Infant Mortality
Maternal Age
Maternal Mortality
Mortality
North America
Parents
Population
Population Characteristics
Population Dynamics
Pregnancy Complications
Scandinavian and Nordic Countries
Socioeconomic Factors
Sweden
United Kingdom
United States
Wales