@misc{indiciae019bac41f9db,
  title = {Symposium on immunization. Immunization against poliomyelitis.},
  author = {P F Wehrle},
  year = {1967},
  doi = {10.1080/00039896.1967.10664952},
  url = {https://pubmed.ncbi.nlm.nih.gov/6054574/},
  note = {Source identifier: 6054574}
}