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Prevalence of spirometry-defined airflow obstruction in never-smoking working US coal miners by pneumoconiosis status

 

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Feb 20209457130
Mar 20205532625
Apr 20201902823
May 20208824
Jun 202078122
Jul 2020143614
Aug 2020841710
Sep 2020107117
Oct 202013788
Nov 20205533
Dec 20206784
Jan 20216344
Feb 202110273
Mar 20218958
Apr 20216420
May 20212920
Jun 2021543
Jul 2021320
Aug 2021514
Sep 2021733
Total2814222155