@misc{indiciaec8a55aed1434,
  title = {Ultrasonically guided percutaneous pyeloscopy.},
  author = {M Saitoh and H Watanabe},
  year = {1981},
  doi = {10.1016/0090-4295(81)90189-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/7233659/},
  note = {Source identifier: 7233659}
}