No abstract available
MeSH terms
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Aged
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Ampulla of Vater / anatomy & histology*
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Catheterization / instrumentation
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Catheterization / methods*
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Cholangiopancreatography, Endoscopic Retrograde / instrumentation
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Cholangiopancreatography, Endoscopic Retrograde / methods*
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Female
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Humans
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Intestinal Mucosa / anatomy & histology*
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Middle Aged