@misc{indiciaed866146ece51,
  title = {Pulmonary artery ring.},
  author = {H G HILLER and A D MACLEAN},
  year = {1957},
  doi = {10.3109/00016925709171478},
  url = {https://pubmed.ncbi.nlm.nih.gov/13508325/},
  note = {Source identifier: 13508325}
}