Impact of Education on COPD Severity and All-Cause Mortality in Lifetime Never-Smokers and Longtime Ex-Smokers: Results of the COSYCONET Cohort by Lutter JI, Jörres RA, Welte T, Watz H, Waschki B, Alter P, Trudzinski FC, Ohlander J, Behr J, Bals R, Studnicka M, Holle R, Vogelmeier CF, Kahnert K

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