No abstract available
MeSH terms
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Adolescent
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False Negative Reactions
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Humans
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Male
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Melena / diagnostic imaging*
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Melena / pathology
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Melena / physiopathology
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Radionuclide Imaging
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Sensitivity and Specificity
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Sodium Pertechnetate Tc 99m
Substances
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Sodium Pertechnetate Tc 99m