@article{castro_2015,  title={The evolution of the socioeconomic gap in fertility among adolescents in Chile, 1990-2011},  volume={31},  ISSN={0102-311X},  url={https://doi.org/10.1590/0102-311X00100214},  DOI={10.1590/0102-311X00100214},  number={8},  journal={Cadernos de Saúde Pública},  publisher={Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz},  author={Castro, Ruben},  year={2015},  month={Aug},  pages={1789–1793} }