@article{Blakely2005,
author = {Blakely, T. and Wilson, N.},
title= {The contribution of smoking to inequalities in mortality by education varies over time and by sex: Two national cohort studies, 1981-84 and 1996-99},
year = {2005},
doi = {10.1093/ije/dyi172},
URL = {http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=16109733},
journal = {International Journal of Epidemiololgy},
volume = {34},
number = {5},
pages = {1054--62},
}