@misc{indiciae09aa3e57e775,
  title = {Variability in pupil size estimation.},
  author = {A Clark and T N S Clarke and B Gregson and P N A Hooker and I R Chambers},
  year = {2006},
  doi = {10.1136/emj.2005.030247},
  url = {https://pubmed.ncbi.nlm.nih.gov/16714502/},
  note = {Source identifier: 16714502}
}