@misc{indiciaec2b102f29c4b,
  title = {Approved methodology for methacholine challenge.},
  author = {R R Rosenthal},
  doi = {10.2500/108854189778959867},
  url = {https://pubmed.ncbi.nlm.nih.gov/2684750/},
  note = {Source identifier: 2684750}
}