@misc{indiciaeb6316fefa566,
  title = {[Primary retroperitoneal tumors].},
  author = {A Frilling and K Grabitz and H Nier},
  year = {1986},
  doi = {10.1055/s-2008-1068684},
  url = {https://pubmed.ncbi.nlm.nih.gov/3769809/},
  note = {Source identifier: 3769809}
}