No abstract available
MeSH terms
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Adult
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Age Factors
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Aged
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Biomarkers / blood
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Humans
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Incidence
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Japan / epidemiology
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Mass Screening / methods*
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Middle Aged
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Pepsinogens / blood*
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Stomach Ulcer / diagnosis*
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Stomach Ulcer / epidemiology
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Stomach Ulcer / prevention & control
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Time Factors