No abstract available
MeSH terms
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Adult
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Clinical Trials as Topic
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Coronary Disease / drug therapy*
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Echocardiography*
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Humans
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Male
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Middle Aged
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Myocardial Contraction / drug effects
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Nitroglycerin / therapeutic use*
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Placebos
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Propranolol / therapeutic use*
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Verapamil / therapeutic use*
Substances
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Placebos
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Propranolol
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Verapamil
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Nitroglycerin