@misc{indiciaeff2ac09afd87,
  title = {Spectators in the OR.},
  author = {S E Ziel},
  year = {1997},
  doi = {10.1016/s0001-2092(06)63350-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/9034454/},
  note = {Source identifier: 9034454}
}