BibTex format
@article{Soong:2015:10.1136/bmjopen-2015-008456,
author = {Soong, JTY and Poots, AJ and Scott, S and Donald, K and Woodcock, T and Lovett, D and Bell, D},
doi = {10.1136/bmjopen-2015-008456},
journal = {BMJ Open},
title = {Quantifying the prevalence of frailty in English hospitals},
url = {http://dx.doi.org/10.1136/bmjopen-2015-008456},
volume = {5},
year = {2015}
}