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Urban air pollution and chronic obstructive pulmonary disease-related emergency department visits

 

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Oct 20091262354
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Jan 201035513
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Apr 20123603
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Feb 20206552
Mar 202011930
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May 20208851
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Aug 20203810
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Dec 20206376
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Sep 2021743
Oct 20217582
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Dec 20216952
Jan 202263131
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Mar 20225640
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Total7147762908