@misc{indiciaedfdef4fcf037,
  title = {Letter: Doppler angiography.},
  author = {D Negus and C R Rickford},
  year = {1976},
  doi = {10.1136/bmj.1.6018.1148-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/1268601/},
  note = {Source identifier: 1268601}
}