BibTex format
@article{Aylin:2003:10.1136/bmj.326.7403.1397-b,
author = {Aylin, P and Jarman, B and Kelsey, T},
doi = {10.1136/bmj.326.7403.1397-b},
journal = {BRITISH MEDICAL JOURNAL},
pages = {1397--1398},
title = {What hospital mortality league tables tell you},
url = {http://dx.doi.org/10.1136/bmj.326.7403.1397-b},
volume = {326},
year = {2003}
}