@misc{indiciaea5eb771a89a3,
  title = {A feedback device for teaching diaphragmatic breathing.},
  author = {J D Block and J Lagerson and L R Zohman and G Kelly},
  year = {1969},
  doi = {10.1164/arrd.1969.100.4.577},
  url = {https://pubmed.ncbi.nlm.nih.gov/5350024/},
  note = {Source identifier: 5350024}
}