@misc{indiciae1f9dddca3c6f,
  title = {[Sonography and endoscopy as complementary study methods. Case report].},
  author = {E Farrenkopf},
  year = {1983},
  doi = {10.1055/s-2007-1013038},
  url = {https://pubmed.ncbi.nlm.nih.gov/6648477/},
  note = {Source identifier: 6648477}
}