@misc{indiciaedd4931c882fe,
  title = {Letter: Negative complement-fixation tests as an immunopathological finding.},
  author = {K Penttinen and O Wager and S Pyrhönen and P Leinikki and A M Teppo},
  year = {1974},
  doi = {10.1016/s0140-6736(74)93136-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4131227/},
  note = {Source identifier: 4131227}
}