No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Carbon*
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Colon
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Colonoscopes
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Colonoscopy / methods*
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Coloring Agents* / administration & dosage
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Female
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Humans
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Injections, Intralesional / methods
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Male
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Middle Aged
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Staining and Labeling
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Sterilization / methods*
Substances
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Coloring Agents
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chinese ink
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Carbon