@misc{indiciae595eae8d1343,
  title = {Challenging an exercise challenge protocol.},
  author = {E Berglund},
  year = {1994},
  doi = {10.1183/09031936.94.07101909},
  url = {https://pubmed.ncbi.nlm.nih.gov/7828705/},
  note = {Source identifier: 7828705}
}