@misc{indiciaeb60063d98b59,
  title = {[Rheumatoid factor titers].},
  author = {R Otto and P Lindau and B Rössner and G Wessel and A In der Au and R Jäckel and N Römhild and W Keitel and R Wille and W Wenz and B Bartuschka and R E Altus and E Tanner and M Wesser and A Zielke},
  year = {1979},
  url = {https://pubmed.ncbi.nlm.nih.gov/90500/},
  note = {Source identifier: 90500}
}