@misc{indiciaebdc0d2f3e3b6,
  title = {Target sign for emphysema.},
  author = {J R Whiteside},
  year = {1979},
  doi = {10.1378/chest.75.4.530a},
  url = {https://pubmed.ncbi.nlm.nih.gov/156106/},
  note = {Source identifier: 156106}
}