@misc{indiciae8b43768febe4,
  title = {Transfer factor in chronic obstructive bronchitis.},
  author = {K N Palmer and M L Diament},
  year = {1969},
  doi = {10.1016/s0140-6736(69)90304-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/4185562/},
  note = {Source identifier: 4185562}
}