No abstract available
MeSH terms
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Adult
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Aged
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Evaluation Studies as Topic
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Female
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Gastrointestinal Agents*
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Gastrointestinal Diseases / diagnostic imaging*
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Humans
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Image Enhancement / standards*
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Male
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Middle Aged
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Silicates*
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Ultrasonography / standards*
Substances
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Gastrointestinal Agents
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Silicates
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Smectite