RT Journal Article SR Electronic T1 Correction: Ambient air pollution, lung function and COPD: cross-sectional analysis from the WHO Study of AGEing and adult health wave 1 JF BMJ Open Respiratory Research JO BMJ Open Resp Res FD British Thoracic Society SP e000684corr1 DO 10.1136/bmjresp-2020-000684corr1 VO 8 IS 1 YR 2021 UL http://bmjopenrespres.bmj.com/content/8/1/e000684corr1.abstract AB