BibTex format
@article{Modi:2008:10.1136/bmj.39559.518391.BE,
author = {Modi, N},
doi = {10.1136/bmj.39559.518391.BE},
journal = {BRITISH MEDICAL JOURNAL},
pages = {1199--1200},
title = {Survival after extremely preterm birth},
url = {http://dx.doi.org/10.1136/bmj.39559.518391.BE},
volume = {336},
year = {2008}
}