No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
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Review
MeSH terms
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Aged
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Arrhythmia, Sinus / diagnosis*
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Arrhythmias, Cardiac / diagnosis*
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Atrial Fibrillation / complications
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Atropine
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Bradycardia / diagnosis
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Cardiac Pacing, Artificial / methods
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Electric Countershock
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Electrocardiography*
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Exercise Test
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Humans
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Isoproterenol
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Pacemaker, Artificial
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Sinoatrial Block / diagnosis
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Tachycardia / diagnosis