Pub Date : 2021-11-01DOI: 10.1136/thorax-2021-btsabstracts.4J. Worrell, G. Finney, K. Hargrave, C. Hansell, J. Singh Nijjar, F. Morton, J. Cole, M. MacLeod
Pub Date : 2021-11-01DOI: 10.1136/thorax-2021-btsabstracts.5CM Orton, Henry H. Symons, B. Moseley, J. Archer, Natalya F. Watson, K. Philip, B. Saccente-Kennedy, D. Costello, WJ Browne, JD Calder, B. Bzdek, JH Hull, J. Reid, PL Shah