No abstract available
MeSH terms
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Adult
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Aged
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Aspirin / administration & dosage
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Cardiovascular Diseases / etiology
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Cardiovascular Diseases / prevention & control*
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Health Behavior
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Health Promotion / organization & administration*
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Humans
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Life Style
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Middle Aged
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Minnesota
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Physician's Role*
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Public Health*
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Rural Health Services / organization & administration*
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Whooping Cough / prevention & control