[Umbilical or vitelline fistula].

@article{Galvo1967UmbilicalOV,
  title={[Umbilical or vitelline fistula].},
  author={J Galv{\~a}o and O J Alves},
  journal={Revista brasileira de gastroenterologia},
  year={1967},
  volume={19 3},
  pages={35-7}
}