BibTex format
@unpublished{Williams:2022:10.1101/2022.04.25.22274262,
author = {Williams, PJ and Cumella, A and Philip, KEJ and Laverty, AA and Hopkinson, NS},
doi = {10.1101/2022.04.25.22274262},
title = {Smoking and socio-economic factors linked to acute exacerbations of COPD: analysis from an Asthma + Lung UK survey},
url = {http://dx.doi.org/10.1101/2022.04.25.22274262},
year = {2022}
}