@misc{indiciae583bbfe6724d,
  title = {Electronic communication.},
  author = {J Clarke and P J Harkin},
  year = {1993},
  doi = {10.1136/bmj.306.6869.64},
  url = {https://pubmed.ncbi.nlm.nih.gov/8435593/},
  note = {Source identifier: 8435593}
}