@misc{indiciaeee1c832d8c67,
  title = {Reference spirometric values using techniques and equipment that meet ATS recommendations.},
  author = {R O Crapo and A H Morris and R M Gardner},
  year = {1981},
  doi = {10.1164/arrd.1981.123.6.659},
  url = {https://pubmed.ncbi.nlm.nih.gov/7271065/},
  note = {Source identifier: 7271065}
}