@misc{indiciaee2ab8be6ef8a,
  title = {Difficult asthma in children.},
  author = {S A McKenzie and A Bush},
  year = {2002},
  doi = {10.1136/thorax.57.10.915},
  url = {https://pubmed.ncbi.nlm.nih.gov/12324681/},
  note = {Source identifier: 12324681}
}