@misc{indiciaeeaa5895e6945,
  title = {Urinary calculus containing gas.},
  author = {Ryan F Paterson and Jeffrey M Welsch and Thomas Koerner and James E Lingeman},
  year = {2002},
  doi = {10.1016/s0090-4295(02)01666-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/12100949/},
  note = {Source identifier: 12100949}
}