@misc{indiciaecb91ad0868b5,
  title = {Observations on recent increase in mortality from asthma.},
  author = {F E Speizer and R Doll and P Heaf},
  year = {1968},
  doi = {10.1136/bmj.1.5588.335},
  url = {https://pubmed.ncbi.nlm.nih.gov/5317525/},
  note = {Source identifier: 5317525}
}