No abstract available
Publication types
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Letter
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Observational Study
MeSH terms
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Adult
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Aged
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Aged, 80 and over
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Asymptomatic Diseases*
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Biomarkers, Tumor / blood*
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Early Detection of Cancer / methods*
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Female
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Humans
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Male
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Middle Aged
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Neoplasms / blood
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Neoplasms / diagnosis*
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Prospective Studies
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Spain
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Unnecessary Procedures / statistics & numerical data*