@misc{indiciaeb78b89d20bfe,
  title = {Retrograde doubts.},
  author = {H J Marriott},
  year = {1970},
  doi = {10.1378/chest.57.1.2},
  url = {https://pubmed.ncbi.nlm.nih.gov/5410426/},
  note = {Source identifier: 5410426}
}