@misc{indiciae9a6185f17c2c,
  title = {Acute pneumoperitoneum without peritonitis. A case report.},
  author = {K Ongena and C Simoens and B Opdebeek and G Willems},
  url = {https://pubmed.ncbi.nlm.nih.gov/9079143/},
  note = {Source identifier: 9079143}
}