No abstract available
MeSH terms
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Aged
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Color
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Coloring Agents
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Esophageal Neoplasms / diagnosis*
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Esophagoscopy
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Female
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Humans
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Iodides
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Male
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Middle Aged
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Narrow Band Imaging*
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Pharyngeal Neoplasms / diagnosis*
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Retrospective Studies
Substances
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Coloring Agents
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Iodides
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Lugol's solution