@misc{indiciaee50a8521738b,
  title = {Pneumoperitoneum.},
  author = {L Kreel},
  year = {1986},
  doi = {10.1136/pgmj.62.723.31},
  url = {https://pubmed.ncbi.nlm.nih.gov/3099274/},
  note = {Source identifier: 3099274}
}