@misc{indiciaeb7a486caac81,
  title = {Letter: Increase in asthma mortality.},
  author = {B Spilker},
  year = {1973},
  doi = {10.1136/bmj.4.5885.171-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/4752329/},
  note = {Source identifier: 4752329}
}