@article{article478eefbc,
title   = {Beta-carotene concentrations in maternal and cord blood of smokers and non-smokers},
author = {Silva, Silmara Salete de Barros and Rondó, Patricia Helen de Carvalho and Erzinger, Gilmar Sidnei},
year = {2005},
doi = {10.1016/j.earlhumdev.2004.08.003},
journal   = {Early Human Development}
}