@misc{indiciae3c1709a0f432,
  title = {Letter: Superior vena cava obstruction.},
  author = {G F Tyers and E H Williams and C R Wine},
  year = {1976},
  doi = {10.1016/s0003-4975(10)63990-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/973769/},
  note = {Source identifier: 973769}
}