@misc{indiciaef366b649aa34,
  title = {Transcutaneous phrenic nerve stimulation.},
  author = {R I Ross-Russell and B A Helps},
  year = {1992},
  doi = {10.1136/jnnp.55.7.632-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/1640252/},
  note = {Source identifier: 1640252}
}