@misc{indiciaecc9ee73b8668,
  title = {Tracing patients.},
  author = {K M LAURENCE},
  year = {1959},
  doi = {10.1016/s0140-6736(59)90159-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/14414577/},
  note = {Source identifier: 14414577}
}