@misc{indiciae8beba39f94bc,
  title = {Ionisers for chronic asthma.},
  author = {K Blackhall and S Appleton and C J Cates},
  year = {2003},
  doi = {10.1002/14651858.cd002986},
  url = {https://pubmed.ncbi.nlm.nih.gov/12917939/},
  note = {Source identifier: 12917939}
}