No abstract available
MeSH terms
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Adult
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Age Factors
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Aged*
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Arrhythmias, Cardiac / epidemiology*
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Cardiac Complexes, Premature / epidemiology
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Cardiovascular Diseases / diagnosis
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Germany, East
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Humans
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Middle Aged
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Pacemaker, Artificial
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Ventricular Fibrillation / epidemiology