@misc{indiciaef886e4e14e62,
  title = {New instrument.},
  author = {F H MAYFIELD},
  year = {1957},
  doi = {10.3171/jns.1957.14.4.0469},
  url = {https://pubmed.ncbi.nlm.nih.gov/13439427/},
  note = {Source identifier: 13439427}
}