@misc{indiciae48438c87620f,
  title = {[The rheumatoid factor (RF, rheuma factor, agglutination activating factor, RA factor)].},
  author = {V TSONCHEV and N POPOV},
  year = {1961},
  url = {https://pubmed.ncbi.nlm.nih.gov/13778405/},
  note = {Source identifier: 13778405}
}