@misc{indiciaeb423958b1235,
  title = {Variations in diaphragmatic breathing.},
  author = {R L Dontigny},
  year = {1973},
  doi = {10.1093/ptj/53.5.514},
  url = {https://pubmed.ncbi.nlm.nih.gov/4695557/},
  note = {Source identifier: 4695557}
}