@misc{indiciae03e33377263a,
  title = {Heroin inhalation and asthma.},
  author = {S Hughes and P M Calverley},
  year = {1988},
  doi = {10.1136/bmj.297.6662.1511},
  url = {https://pubmed.ncbi.nlm.nih.gov/3147049/},
  note = {Source identifier: 3147049}
}