No abstract available
MeSH terms
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Administration, Oral
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Aged
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Barium Sulfate / adverse effects*
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Contrast Media / adverse effects*
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Humans
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Male
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Pneumonia, Aspiration / chemically induced
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Pneumonia, Aspiration / diagnostic imaging*
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Radiography, Thoracic
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Stomach Neoplasms / diagnostic imaging
Substances
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Contrast Media
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Barium Sulfate