@misc{indiciaeff2f49c403b9,
  title = {Use of the operating microscope.},
  author = {M D Feldman and H J Wifnicki},
  year = {1989},
  doi = {10.1055/s-2007-1006890},
  url = {https://pubmed.ncbi.nlm.nih.gov/2810210/},
  note = {Source identifier: 2810210}
}