BibTex format
@article{Bottle:2016:10.1136/bmjopen-2015-010669,
author = {Bottle, RA and Goudie, R and Bell, D and Aylin, P and Cowie, M},
doi = {10.1136/bmjopen-2015-010669},
journal = {BMJ Open},
title = {Use of hospital services by age and comorbidity after an index heart failure admission in England: an observational study},
url = {http://dx.doi.org/10.1136/bmjopen-2015-010669},
volume = {6},
year = {2016}
}