No abstract available
MeSH terms
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Aged
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Erythrocytes*
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Gastrointestinal Hemorrhage / diagnostic imaging*
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Humans
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Male
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Radionuclide Imaging
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Rectum / diagnostic imaging
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Technetium Tc 99m Sulfur Colloid*
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Technetium*
Substances
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Technetium Tc 99m Sulfur Colloid
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Technetium