@misc{indiciae6d0442de905f,
  title = {An enigma variation.},
  author = {R J Smith},
  year = {1987},
  doi = {10.1136/bjo.71.7.485},
  url = {https://pubmed.ncbi.nlm.nih.gov/3651359/},
  note = {Source identifier: 3651359}
}