@article{Nierkens2006,
author = {Nierkens, V. and de Vries, H. and Stronks, K.},
title= {Smoking in immigrants: Do socioeconomic gradients follow the pattern expected from the tobacco epidemic?},
year = {2006},
doi = {10.1136/tc.2006.014902},
volume = {15},
number = {5},
pages = {385--391},
}