@misc{indiciaef79a3f27780b,
  title = {Portable oxygen therapy: assessment and usage.},
  author = {S H Lock and E A Paul and R M Rudd and J A Wedzicha},
  year = {1991},
  doi = {10.1016/s0954-6111(06)80186-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/1759006/},
  note = {Source identifier: 1759006}
}