@misc{indiciaea55180cbbaf9,
  title = {Letter: Nothing much for the nurses.},
  author = {A F Gray},
  year = {1974},
  doi = {10.1016/s0140-6736(74)90574-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4135259/},
  note = {Source identifier: 4135259}
}