@misc{indiciaec5fb2b9aed4f,
  title = {Positioning vs vibrations in chest physiotherapy.},
  author = {A Hough},
  year = {1991},
  doi = {10.1378/chest.100.6.1741b},
  url = {https://pubmed.ncbi.nlm.nih.gov/1959431/},
  note = {Source identifier: 1959431}
}