@misc{indiciae207ba83c9bc0,
  title = {Operative endoscopy.},
  author = {H Koch},
  year = {1977},
  doi = {10.1016/s0016-5107(77)73452-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/590706/},
  note = {Source identifier: 590706}
}