@article{article4637973b,
title   = {Why are the low birtweight rates in Brazil higher in richer than in poorer municipalities??: Exploring the epidemiological paradox of low birthweight},
author = {Silva, Antônio A. M. and Bettiol, Heloisa and Barbieri, Marco Antonio and Pereira, Márcio M. and Brito, Luiz Gustavo Oliveira and Ribeiro, Valdinar S. and Aragão, Vânia M. F.},
year = {2005},
doi = {10.1111/j.1365-3016.2004.00624.x},
journal   = {Paediatric and Perinatal Epidemiology}
}