RT Journal Article SR Electronic T1 Leveraging genetic ancestry to study severe asthma exacerbations in an admixed population JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP thorax-2022-219459 DO 10.1136/thorax-2022-219459 A1 Yadu Gautam A1 Tesfaye B Mersha YR 2022 UL http://thorax.bmj.com/content/early/2022/11/17/thorax-2022-219459.abstract AB