@misc{indiciaeb1e14c798e2e,
  title = {The internal urinary sphincter: a double-loop system.},
  author = {J A Hutch},
  year = {1971},
  doi = {10.1016/s0022-5347(17)61530-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/5549782/},
  note = {Source identifier: 5549782}
}