@misc{indiciae4be363ebeddf,
  title = {Fluoroscopic retrograde pyelography.},
  author = {S C Schatzki and J Fischmann and R Schatzki},
  year = {1971},
  doi = {10.1016/s0022-5347(17)61575-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4997399/},
  note = {Source identifier: 4997399}
}