@misc{indiciaea14aa429e9af,
  title = {Left supradiaphragmatic semilunar shadow.},
  author = {F B Landis and S K Das},
  year = {1971},
  doi = {10.1378/chest.59.3.320},
  url = {https://pubmed.ncbi.nlm.nih.gov/5544972/},
  note = {Source identifier: 5544972}
}