@misc{indiciae070ed92fa344,
  title = {A simple microretractor.},
  author = {K Narayanan and S S Ramasastry},
  year = {1987},
  doi = {10.1002/micr.1920080416},
  url = {https://pubmed.ncbi.nlm.nih.gov/3431420/},
  note = {Source identifier: 3431420}
}