BibTex format
@article{Williams:2005:10.1136/bmj.331.7513.371,
author = {Williams, S and Bottle, A and Aylin, P},
doi = {10.1136/bmj.331.7513.371},
journal = {BRITISH MEDICAL JOURNAL},
pages = {371--+},
title = {Dr Foster's case notes - Length of hospital stay and subsequent emergency readmission},
url = {http://dx.doi.org/10.1136/bmj.331.7513.371},
volume = {331},
year = {2005}
}