@misc{indiciaeedd31ac2ab15,
  title = {Spontaneous pneumoperitoneum in appendicitis.},
  author = {B E GREENBERG},
  year = {1961},
  doi = {10.1148/77.2.248},
  url = {https://pubmed.ncbi.nlm.nih.gov/13708236/},
  note = {Source identifier: 13708236}
}