BibTex format
@article{Aylin:2007:10.1136/bmj.39168.496366.55,
author = {Aylin, P and Bottle, A and Majeed, A},
doi = {10.1136/bmj.39168.496366.55},
journal = {BMJ-BRITISH MEDICAL JOURNAL},
pages = {1044--1047},
title = {Use of administrative data or clinical databases as predictors of risk of death in hospital: comparison of models},
url = {http://dx.doi.org/10.1136/bmj.39168.496366.55},
volume = {334},
year = {2007}
}