@misc{indiciaeed5f45fc9fbf,
  title = {Inter-observer variation in refraction and visual acuity measurement using a standardized protocol.},
  author = {R Klein and B E Klein and S E Moss and D DeMets},
  year = {1983},
  doi = {10.1016/s0161-6420(83)34382-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/6664675/},
  note = {Source identifier: 6664675}
}