No abstract available
MeSH terms
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Aged
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Biliary Tract Diseases / surgery*
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Cholangiopancreatography, Endoscopic Retrograde / instrumentation
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Cholangiopancreatography, Endoscopic Retrograde / methods*
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Diverticulum / surgery*
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Duodenal Diseases / surgery*
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Duodenoscopy / methods
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Female
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Gallstones
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Humans
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Male
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Middle Aged