@article{jarrell_2002,  title={Rationale for the study of the human sex ratio in population studies of polluted environments},  volume={18},  ISSN={0102-311X},  url={https://doi.org/10.1590/S0102-311X2002000200007},  DOI={10.1590/S0102-311X2002000200007},  number={2},  journal={Cadernos de Saúde Pública},  publisher={Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz},  author={Jarrell, John},  year={2002},  month={Mar},  pages={429–434} }