@misc{indiciae3c09b57071ee,
  title = {Difficult asthma: beyond the guidelines.},
  author = {B Lask},
  year = {1999},
  doi = {10.1136/adc.81.4.372c},
  url = {https://pubmed.ncbi.nlm.nih.gov/10577361/},
  note = {Source identifier: 10577361}
}