No abstract available
MeSH terms
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Administration, Oral
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Cardiotonic Agents / administration & dosage
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Cardiotonic Agents / therapeutic use*
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Chronic Disease
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Heart Failure / drug therapy*
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Heart Failure / mortality
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Humans
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Phosphodiesterase Inhibitors / therapeutic use
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Vasodilation
Substances
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Cardiotonic Agents
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Phosphodiesterase Inhibitors