@misc{indiciaeb6fd397ac51e,
  title = {[Ultrasonography-guided therapy].},
  author = {R Graf},
  year = {1997},
  doi = {10.1007/s001320050067},
  url = {https://pubmed.ncbi.nlm.nih.gov/9082301/},
  note = {Source identifier: 9082301}
}