@article{vrandecic_gontijo filho_fantini_silva_oliveira_martins jr_barbosa_oliveira_avelar_miotto_et al._1994,  title={Bioprótese aórtica porcina "Stentless": acompanhamento clínico a médio prazo},  volume={9},  ISSN={0102-7638},  url={https://doi.org/10.1590/S0102-76381994000100006},  DOI={10.1590/S0102-76381994000100006},  number={1},  journal={Brazilian Journal of Cardiovascular Surgery},  publisher={Sociedade Brasileira de Cirurgia Cardiovascular},  author={Vrandecic, Mário O and Gontijo Filho, Bayard and Fantini, Fernando Antônio and Silva, João Alfredo Paula E and Oliveira, Ozanan C and Martins Jr, Idail Costa and Barbosa, Juscelino Teixeira and Oliveira, Roberto M and Avelar, Sandra O. S and Miotto, Hebert C and Barbosa, Mauricio R and Vrandecic, Érika and Vrandecic, Ektor},  year={1994},  month={Jan},  pages={60–63} }