@misc{indiciaee05acd130e6f,
  title = {Exercise testing in children.},
  author = {P A Nixon and D M Orenstein},
  year = {1988},
  doi = {10.1002/ppul.1950050208},
  url = {https://pubmed.ncbi.nlm.nih.gov/3065707/},
  note = {Source identifier: 3065707}
}