@misc{indiciae43d6a1f78bb5,
  title = {The R factors.},
  author = {S Mitsuhashi},
  year = {1969},
  doi = {10.1093/infdis/119.1.89},
  url = {https://pubmed.ncbi.nlm.nih.gov/4885251/},
  note = {Source identifier: 4885251}
}