No abstract available
MeSH terms
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Adrenergic beta-Antagonists / therapeutic use
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Adult
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Aged
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Butylamines / therapeutic use*
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Clinical Trials as Topic
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Coronary Disease / drug therapy*
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Drug Synergism
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Electrocardiography
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Humans
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Middle Aged
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Pentaerythritol Tetranitrate / therapeutic use*
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Sympatholytics / therapeutic use*
Substances
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Adrenergic beta-Antagonists
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Butylamines
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Sympatholytics
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Pentaerythritol Tetranitrate