@article{santana_surita_cecatti_2018,  title={Multiple Pregnancy: Epidemiology and Association with Maternal and Perinatal Morbidity},  volume={40},  ISSN={0100-7203},  url={https://doi.org/10.1055/s-0038-1668117},  DOI={10.1055/s-0038-1668117},  number={9},  journal={Revista Brasileira de Ginecologia e Obstetrícia},  publisher={Federação Brasileira das Sociedades de Ginecologia e Obstetrícia},  author={Santana, Danielly Scaranello and Surita, Fernanda Garanhani and Cecatti, José Guilherme},  year={2018},  month={Sep},  pages={554–562} }