@misc{indiciae0f950abdf02f,
  title = {[Rheumatoid factor in aged persons].},
  author = {J M Verdier and X Phélip and G Cabanel},
  year = {1971},
  url = {https://pubmed.ncbi.nlm.nih.gov/5138667/},
  note = {Source identifier: 5138667}
}