@misc{indiciaef6f9af0f36f4,
  title = {Methacholine challenge tests: sample sizes required in crossover trials.},
  author = {M Neuhäuser and K H Jöckel},
  year = {2006},
  doi = {10.5414/cpp44027},
  url = {https://pubmed.ncbi.nlm.nih.gov/16425968/},
  note = {Source identifier: 16425968}
}