@misc{indiciae2edaf4666ed0,
  title = {Primary retroperitoneal tumors.},
  author = {A Kutta and U Engelmann and U Schmidt and T Senge},
  year = {1992},
  url = {https://pubmed.ncbi.nlm.nih.gov/1589933/},
  note = {Source identifier: 1589933}
}