@misc{indiciae3735195be9b0,
  title = {[Esophagoatriogram in constrictive pericarditis].},
  author = {G FRIESE and D SACHS},
  year = {1957},
  url = {https://pubmed.ncbi.nlm.nih.gov/13531452/},
  note = {Source identifier: 13531452}
}