@misc{indiciae253c07c2fa55,
  title = {Incentive spirometry in sickle cell crisis.},
  author = {W W Merrill},
  year = {1996},
  doi = {10.1056/nejm199601113340215},
  url = {https://pubmed.ncbi.nlm.nih.gov/8531956/},
  note = {Source identifier: 8531956}
}