@misc{indiciaec12a269cf9f3,
  title = {Methacholine challenge.},
  author = {I J Folk},
  year = {1982},
  doi = {10.1001/jama.247.3.305},
  url = {https://pubmed.ncbi.nlm.nih.gov/7054530/},
  note = {Source identifier: 7054530}
}