No abstract available
MeSH terms
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Duodenoscopy / methods
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Humans
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Male
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Middle Aged
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Neoplasms, Unknown Primary / pathology*
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Neoplasms, Unknown Primary / surgery
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Pancreatic Juice / cytology
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Pancreatic Neoplasms / pathology*
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Pancreatic Neoplasms / surgery
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Stomach Neoplasms / surgery