No abstract available
MeSH terms
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Adult
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Air Pollution / adverse effects
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Air Pollution / analysis
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Disease Progression
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Duodenal Ulcer* / diagnosis
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Duodenal Ulcer* / epidemiology
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Humans
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Male
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Middle Aged
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Motor Vehicles*
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Occupational Diseases* / diagnosis
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Occupational Diseases* / epidemiology
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Occupational Exposure / adverse effects
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Occupational Exposure / analysis
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Prevalence
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Russia
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Stomach Ulcer* / diagnosis
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Stomach Ulcer* / epidemiology