No abstract available
MeSH terms
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Adenoma, Bile Duct / pathology*
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Adult
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Aged
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Bile Duct Neoplasms / pathology*
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Biopsy / methods*
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Cholangiopancreatography, Endoscopic Retrograde*
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Common Bile Duct / pathology*
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Common Bile Duct Neoplasms / pathology*
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Female
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Hepatic Duct, Common / pathology*
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Humans
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Male
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Middle Aged