No abstract available
MeSH terms
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Adrenergic beta-Agonists / therapeutic use*
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Alkaloids / therapeutic use*
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Bradycardia / drug therapy*
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Heart Block / drug therapy
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Heart Conduction System / drug effects
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Humans
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Sick Sinus Syndrome / drug therapy
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Tetrahydroisoquinolines*
Substances
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Adrenergic beta-Agonists
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Alkaloids
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Tetrahydroisoquinolines
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higenamine