@misc{indiciae61af876830ef,
  title = {[Combined measles-smallpox vaccination].},
  author = {C Ristori and H Boccardo and J M Borgoño and R Greiber and E Heras and B Carrillo and A Ramírez and E Guzmán},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/4242000/},
  note = {Source identifier: 4242000}
}