BibTex format
@article{Mullins:2021:10.1136/bmjopen-2020-044567,
author = {Mullins, E and Sharma, S and McGregor, A},
doi = {10.1136/bmjopen-2020-044567},
journal = {BMJ Open},
pages = {1--10},
title = {Postnatal exercise interventions: a systematic review of adherence and effect},
url = {http://dx.doi.org/10.1136/bmjopen-2020-044567},
volume = {11},
year = {2021}
}