No abstract available
MeSH terms
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Aged
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Biopsy
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Duodenal Diseases / diagnosis*
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Duodenal Diseases / pathology
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Duodenoscopy
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Duodenum / diagnostic imaging
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Duodenum / pathology*
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Humans
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Intestinal Mucosa / diagnostic imaging
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Intestinal Mucosa / pathology*
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Male
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Melanosis / diagnosis*
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Melanosis / pathology