BibTex format
@article{George:2011:10.1136/bmj.d1008,
author = {George, PM and Banya, W and Pareek, N and Bilton, D and Cullinan, P and Hodson, ME and Simmonds, NJ},
doi = {10.1136/bmj.d1008},
journal = {BMJ 2011; 342:d1008},
title = {Improved Survival at Low Lung Function in Cystic Fibrosis; a cohort study from 1990 to 2007},
url = {http://dx.doi.org/10.1136/bmj.d1008},
year = {2011}
}