@article{nascimento_machin_santos_2017,  title={Are there differences in birth weight according to sex and associations with maternal exposure to air pollutants? A cohort study},  volume={135},  ISSN={1516-3180},  url={https://doi.org/10.1590/1516-3180.2016.0262100317},  DOI={10.1590/1516-3180.2016.0262100317},  number={4},  journal={Sao Paulo Medical Journal},  publisher={Associação Paulista de Medicina - APM},  author={Nascimento, Luiz Fernando Costa and Machin, Adrian Blanco and Santos, Djalma Antonio Almeida dos},  year={2017},  month={Jul},  pages={347–354} }