No abstract available
MeSH terms
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Animals
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Bioprosthesis*
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Echocardiography, Transesophageal
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Female
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Heart Defects, Congenital / surgery
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Heart Valve Prosthesis Implantation*
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Humans
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Middle Aged
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Pulmonary Valve Stenosis / diagnostic imaging
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Pulmonary Valve Stenosis / surgery*
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Pulmonary Valve* / transplantation
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Swine
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Time Factors