@article{Chen2006,
author = {Chen, Edith and Martin, Andrew D. and Matthews, Karen A.},
title= {Socioeconomic status and health: Do gradients differ within childhood and adolescence?},
year = {2006},
doi = {10.1016/j.socscimed.2005.08.054},
volume = {62},
number = {9},
pages = {2161--2170},
}