No abstract available
MeSH terms
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Adenocarcinoma / pathology*
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Adult
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Aged, 80 and over
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Bile Duct Neoplasms / pathology*
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Biopsy
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Carbon Dioxide
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Endoscopes
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Endoscopy, Digestive System / instrumentation*
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Endoscopy, Digestive System / methods*
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Female
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Gallstones / diagnosis*
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Gallstones / therapy
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Humans
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Insufflation
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Male
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Middle Aged