@misc{indiciaeab3dfbf43052,
  title = {Endoscopic equipment--quality control using a specially designed light meter.},
  author = {H Sells and R Biggs and R Macdonagh},
  year = {1998},
  doi = {10.1046/j.1464-410x.1998.00731.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/9698675/},
  note = {Source identifier: 9698675}
}