@misc{indiciae5e373fc8effc,
  title = {Comment: metered-dose inhalers.},
  author = {D M Williams and R A Pleasants},
  year = {1989},
  doi = {10.1177/106002808902301025},
  url = {https://pubmed.ncbi.nlm.nih.gov/2815863/},
  note = {Source identifier: 2815863}
}