@misc{indiciae5e2925a84d75,
  title = {Staging classifications.},
  author = {H Ulfelder},
  year = {1979},
  doi = {10.1016/0360-3016(79)90610-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/511616/},
  note = {Source identifier: 511616}
}