RT Journal Article SR Electronic T1 Never-smoker African–American women suffer more from COPD compared with never-smoker Caucasian women JF European Respiratory Review JO EUROPEAN RESPIRATORY REVIEW FD European Respiratory Society SP 190173 DO 10.1183/16000617.0173-2019 VO 29 IS 156 A1 Mahbubur Sumon A1 Alem Mehari YR 2020 UL http://err.ersjournals.com/content/29/156/190173.abstract AB