@misc{indiciae7a3484a3a91f,
  title = {[Retropneumoperitoneum].},
  author = {Z MACZKA-PATKANIOWSKA and M POLITOWSKI},
  year = {1957},
  url = {https://pubmed.ncbi.nlm.nih.gov/13431464/},
  note = {Source identifier: 13431464}
}