@misc{indiciaeca0363f87bce,
  title = {[Echography in appendicitis].},
  author = {J F Lange and H van der Donckt and J van Spengler},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/2183072/},
  note = {Source identifier: 2183072}
}