Pub Date : 2022-11-01DOI: 10.1136/thorax-2022-btsabstracts.217CP Battersby, JT Middleton, H. Zafar, S. Binmahfooz, J. Patel, D. Neelam-Naganathan, M. Toshner, A. Reddy, R. Lewis, L. Watson, A. Swift, R. Condliffe, C. Elliot, A. Hameed, R. Thompson, A. Charalampopoulous, D. Kiely, A. Rothman