@misc{indiciaebc68d4bad4b5,
  title = {A subtle cause of circle system failure.},
  author = {G P Findlay and M J Spittal},
  year = {1995},
  doi = {10.1093/bja/75.5.667},
  url = {https://pubmed.ncbi.nlm.nih.gov/7577302/},
  note = {Source identifier: 7577302}
}