No abstract available
MeSH terms
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Endoscopes, Gastrointestinal
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Endoscopy, Gastrointestinal / methods
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Endoscopy, Gastrointestinal / standards*
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Evaluation Studies as Topic
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Gastrointestinal Neoplasms / diagnostic imaging*
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Gastrointestinal Neoplasms / epidemiology
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Gastrointestinal Neoplasms / pathology
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Humans
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Neoplasm Staging
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Sensitivity and Specificity
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Ultrasonography / instrumentation
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Ultrasonography / methods
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Ultrasonography / standards*