@misc{indiciae9f8670f5aca1,
  title = {Re: black esophagus.},
  author = {G Macedo and A Correia and J Maia and T Ribeiro},
  year = {1998},
  doi = {10.1111/j.1572-0241.1998.855a\_a.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/9625160/},
  note = {Source identifier: 9625160}
}