@misc{indiciaef68613fe6372,
  title = {Simplified pressure method for respirator fit testing.},
  author = {D Han and M Xu and S Foo and W Pilacinski and K Willeke},
  year = {1991},
  doi = {10.1080/15298669191364776},
  url = {https://pubmed.ncbi.nlm.nih.gov/1927906/},
  note = {Source identifier: 1927906}
}