No abstract available
MeSH terms
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Barium Sulfate*
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Bicarbonates
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Carbon Dioxide
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Citrates
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Contrast Media*
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Duodenal Ulcer / diagnostic imaging
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Duodenum / diagnostic imaging*
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Humans
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Methods
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Radiography
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Stomach / diagnostic imaging*
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Stomach Neoplasms / diagnostic imaging
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Stomach Ulcer / diagnostic imaging
Substances
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Bicarbonates
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Citrates
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Contrast Media
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Carbon Dioxide
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Barium Sulfate