@article{almeida_simões_silvinato_bernardo_2020,  title={Ultrasound in the first trimester of pregnancy},  volume={66},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.66.7.1323},  DOI={10.1590/1806-9282.66.7.1323},  number={10},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Almeida, Glauce Romeiro de and Simões, Ricardo dos Santos and Silvinato, Antonio and Bernardo, Wanderley Marques},  year={2020},  month={Oct},  pages={1323–1326} }