BibTex format
@article{Greenfield:2020:10.1136/emermed-2018-208189,
author = {Greenfield, G and Blair, M and Aylin, P and Saxena, S and Majeed, F and Hoffman, M and Bottle, A},
doi = {10.1136/emermed-2018-208189},
journal = {Emergency Medicine Journal},
pages = {597--599},
title = {Frequent attendances at emergency departments in England},
url = {http://dx.doi.org/10.1136/emermed-2018-208189},
volume = {37},
year = {2020}
}