@misc{indiciaeaf92fd929bfc,
  title = {BOOP and COP.},
  author = {U Costabel},
  year = {1992},
  doi = {10.1136/thx.47.3.207-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/1519202/},
  note = {Source identifier: 1519202}
}