@misc{indiciaec55048788d74,
  title = {The earliest graph?},
  author = {R M Goldwyn},
  year = {1990},
  doi = {10.1097/00006534-199001000-00026},
  url = {https://pubmed.ncbi.nlm.nih.gov/2403454/},
  note = {Source identifier: 2403454}
}