@misc{indiciaeb0539b020cef,
  title = {Letter: Smallpox vaccination in infancy.},
  author = {F K Wurapa and S Pacsa and P A Addy and S Amoah},
  year = {1975},
  doi = {10.1016/s0140-6736(75)91331-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/46559/},
  note = {Source identifier: 46559}
}