@misc{indiciaec12d2e38d25d,
  title = {[Immunization schedule: dynamics and updating]},
  author = {L Y Weckx and E S Carvalho},
  year = {1999},
  doi = {10.2223/jped.381},
  url = {https://pubmed.ncbi.nlm.nih.gov/14685492/},
  note = {Source identifier: 14685492}
}