@misc{indiciaedbaca0182f9f,
  title = {A conversion code from the RCGP to the ICHPPC classification system.},
  author = {R Schneeweiss and H W Stuart and J Froom and M Wood and H L Tindall and J D Williamson},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/302851/},
  note = {Source identifier: 302851}
}