@article{2003,  volume={25},  ISSN={0100-7203},  url={https://doi.org/10.1590/S0100-72032003000400001},  DOI={10.1590/S0100-72032003000400001},  number={4},  journal={Revista Brasileira de Ginecologia e Obstetrícia},  publisher={Federação Brasileira das Sociedades de Ginecologia e Obstetrícia},  year={2003},  month={May},  pages={227–227} }