@misc{indiciae06012fa14def,
  title = {Expanded program on immunization and its implementation in the Czech Socialist Republic.},
  author = {J Sejda and D Göpfertová},
  year = {1988},
  url = {https://pubmed.ncbi.nlm.nih.gov/3411117/},
  note = {Source identifier: 3411117}
}