BibTex format
@article{Greenfield:2021:10.1136/emermed-2019-209122,
author = {Greenfield, G and Blair, M and Aylin, P and Saxena, S and Majeed, F and Bottle, R},
doi = {10.1136/emermed-2019-209122},
journal = {Emergency Medicine Journal},
pages = {146--150},
title = {Characteristics of frequent paediatric users of emergency departments in England: an observational study using routine national data},
url = {http://dx.doi.org/10.1136/emermed-2019-209122},
volume = {38},
year = {2021}
}