BibTex format
@article{Hopkinson:2023:10.1136/thorax-2022-219077,
author = {Hopkinson, N and Polkey, M and Alghamdi, S and Alsulayyim, A and Philip, K and Buttery, S},
doi = {10.1136/thorax-2022-219077},
journal = {Thorax},
pages = {136--143},
title = {Oscillatory positive expiratory pressure therapy in COPD (O-COPD): a randomised controlled trial},
url = {http://dx.doi.org/10.1136/thorax-2022-219077},
volume = {78},
year = {2023}
}