@misc{indiciae9f78156ce80f,
  title = {Letter: Risks of repeated immunization.},
  author = {L F Ayvazian},
  year = {1975},
  doi = {10.7326/0003-4819-82-4-589\_1},
  url = {https://pubmed.ncbi.nlm.nih.gov/1119779/},
  note = {Source identifier: 1119779}
}