@misc{indiciae836c0fa7f54c,
  title = {Depth perception in proctoscopy.},
  author = {R B LEWY},
  year = {1961},
  doi = {10.1016/0002-9610(61)90567-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/14464928/},
  note = {Source identifier: 14464928}
}