No abstract available
MeSH terms
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Adolescent
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Adult
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Aged
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Arteriosclerosis Obliterans / diagnosis
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Cardiovascular Diseases / epidemiology*
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Chemical Industry
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Coronary Disease / diagnosis
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Electrocardiography*
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Humans
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Male
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Middle Aged
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Physical Exertion*
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Prospective Studies
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Switzerland
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Vascular Diseases / diagnosis