@misc{indiciaee3af0464e871,
  title = {Letter: Transfer factor.},
  author = {H H Fudenberg},
  year = {1973},
  doi = {10.1016/s0140-6736(73)92051-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4126958/},
  note = {Source identifier: 4126958}
}