@misc{indiciaea9b8b74c4858,
  title = {Present situation with formalin-killed poliomyelitis vaccine.},
  author = {J KNOWELDEN},
  year = {1959},
  doi = {10.1136/bmj.1.5122.620},
  url = {https://pubmed.ncbi.nlm.nih.gov/13629068/},
  note = {Source identifier: 13629068}
}