@misc{indiciaed2fcf880612c,
  title = {Assessment of lung function using an air-flow meter.},
  author = {M Friedman and S Walker},
  year = {1975},
  doi = {10.1016/s0140-6736(75)91212-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/46450/},
  note = {Source identifier: 46450}
}