@misc{indiciae7a42c5fbe21c,
  title = {Providing a comfortable fitted mask.},
  author = {B E Pennock},
  year = {1994},
  doi = {10.1378/chest.106.2.646c},
  url = {https://pubmed.ncbi.nlm.nih.gov/7774369/},
  note = {Source identifier: 7774369}
}