No abstract available
MeSH terms
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Anemia, Iron-Deficiency / blood
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Anemia, Iron-Deficiency / diagnosis*
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Anemia, Iron-Deficiency / etiology
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Bone Marrow / chemistry
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Endoscopy, Gastrointestinal / adverse effects
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Endoscopy, Gastrointestinal / methods
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Evidence-Based Medicine*
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Female
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Ferritins / blood*
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Gastrointestinal Neoplasms / blood
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Gastrointestinal Neoplasms / diagnosis
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Humans
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Iron / analysis
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Male
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Postmenopause / blood
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Practice Guidelines as Topic*
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Sensitivity and Specificity
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Sex Factors