No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Adolescent
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Adult
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Cross-Sectional Studies
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Educational Status*
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Female
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Health Behavior
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Health Knowledge, Attitudes, Practice
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Health Status*
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Health Surveys
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Humans
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Infant Welfare*
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Infant, Newborn
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Population Surveillance
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Pregnancy
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Pregnancy Complications / epidemiology*
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Pregnancy Complications / psychology*
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Smoking / epidemiology*
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Smoking / psychology*
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Social Class*
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Surveys and Questionnaires
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United States / epidemiology