@article{article1cb85bd6,
title   = {Socioeconomic inequality in preterm birth in four Brazilian birth cohort studies},
author = {Sadovsky, Ana Daniela Izoton de and Matijasevich, Alicia},
year = {2018},
doi = {10.1016/j.jped.2017.02.003},
journal   = {Jornal de pediatria}
}