@article{costa_oliveira_alves_2021,  title={Prevalence and factors associated with unplanned pregnancy in a Brazilian capital in the Northeast},  volume={21},  ISSN={1519-3829},  url={https://doi.org/10.1590/1806-93042021000200007},  DOI={10.1590/1806-93042021000200007},  number={2},  journal={Revista Brasileira de Saúde Materno Infantil},  publisher={Instituto de Medicina Integral Prof. Fernando Figueira},  author={Costa, Ana Cleide Mineu and Oliveira, Bruno Luciano Carneiro Alves de and Alves, Maria Teresa Seabra Soares de Britto e},  year={2021},  month={Apr},  pages={461–471} }