@misc{indiciae20e682eff4ad,
  title = {Primary retroperitoneal tumors.},
  author = {J W Braasch and A B Mon},
  year = {1967},
  doi = {10.1016/s0039-6109(16)38243-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/6022980/},
  note = {Source identifier: 6022980}
}