No abstract available
Publication types
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Letter
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Research Support, Non-U.S. Gov't
MeSH terms
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China / epidemiology
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Female
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Humans
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Lung Diseases / epidemiology*
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Lung Diseases / microbiology
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Male
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Middle Aged
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Mycobacterium Infections, Nontuberculous / epidemiology*
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Prevalence
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Prospective Studies
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Risk Factors
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Sentinel Surveillance*
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Sputum / microbiology