@misc{indiciae8aaeb13ca9ac,
  title = {Knee rating scales.},
  author = {Robert G Marx},
  year = {2003},
  doi = {10.1016/j.arthro.2003.10.029},
  url = {https://pubmed.ncbi.nlm.nih.gov/14673453/},
  note = {Source identifier: 14673453}
}