BibTex format
@article{Hastie:2013:10.1186/1471-2288-13-129,
author = {Hastie, DI and Liverani, S and Azizi, L and Richardson, S and Stuecker, I},
doi = {10.1186/1471-2288-13-129},
journal = {BMC MEDICAL RESEARCH METHODOLOGY},
title = {A semi-parametric approach to estimate risk functions associated with multi-dimensional exposure profiles: application to smoking and lung cancer},
url = {http://dx.doi.org/10.1186/1471-2288-13-129},
volume = {13},
year = {2013}
}