No abstract available
MeSH terms
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Air Pollutants / adverse effects
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Air Pollution / adverse effects*
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Family Practice*
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Hong Kong / epidemiology
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Humans
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Office Visits / statistics & numerical data*
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Patient Acceptance of Health Care / statistics & numerical data
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Prospective Studies
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Respiration Disorders / epidemiology
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Respiration Disorders / etiology*
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Respiratory Tract Infections / etiology
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Risk Assessment