BibTex format
@article{Brighton:2020:10.2147/COPD.S238680,
author = {Brighton, LJ and Evans, CJ and Man, WDC and Maddocks, M},
doi = {10.2147/COPD.S238680},
journal = {The International Journal of Chronic Obstructive Pulmonary Disease},
pages = {841--855},
title = {Improving exercise-based interventions for people living with both COPD and frailty: a realist review},
url = {http://dx.doi.org/10.2147/COPD.S238680},
volume = {15},
year = {2020}
}