@article{prado neto_petroianu_2022,  title={ANATOMICAL VARIATIONS OF PORTAL VENOUS SYSTEM: IMPORTANCE IN SURGICAL CLINIC},  volume={35},  ISSN={0102-6720},  url={https://doi.org/10.1590/0102-672020210002e1666},  DOI={10.1590/0102-672020210002e1666},  journal={ABCD. Arquivos Brasileiros de Cirurgia Digestiva (São Paulo)},  publisher={Colégio Brasileiro de Cirurgia Digestiva},  author={PRADO NETO, Edmundo Vieira and PETROIANU, Andy},  year={2022},  pages={e1666} }