@misc{indiciaeb765bb67c044,
  title = {Multiple choice.},
  author = {J Gray},
  year = {1973},
  doi = {10.1016/s0140-6736(73)93240-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4124569/},
  note = {Source identifier: 4124569}
}