BibTex format
@article{Hopkinson:2021:10.1136/bmj.n14,
author = {Hopkinson, NS},
doi = {10.1136/bmj.n14},
journal = {BMJ},
pages = {1--2},
title = {Lung volume reduction for emphysema comes of age.},
url = {http://dx.doi.org/10.1136/bmj.n14},
volume = {372},
year = {2021}
}