RT Journal Article SR Electronic T1 Correction: Association between influenza vaccination and hospitalisation or all-cause mortality in people with COVID-19: a retrospective cohort study JF BMJ Open Respiratory Research JO BMJ Open Resp Res FD British Thoracic Society SP e000857corr1 DO 10.1136/bmjresp-2020-000857corr1 VO 8 IS 1 YR 2021 UL http://bmjopenrespres.bmj.com/content/8/1/e000857corr1.abstract AB