@misc{indiciae5611ab1121f8,
  title = {[New in vitro test for rheumatoid factor].},
  author = {W Müller and P Breitschmidt},
  year = {1980},
  url = {https://pubmed.ncbi.nlm.nih.gov/7232992/},
  note = {Source identifier: 7232992}
}