@misc{indiciae94cd20abfffd,
  title = {Letter: Metastatic processes.},
  author = {M Cowan},
  year = {1974},
  doi = {10.1136/bmj.2.5920.668},
  url = {https://pubmed.ncbi.nlm.nih.gov/4835450/},
  note = {Source identifier: 4835450}
}