@misc{indiciaef599d1ca8eaf,
  title = {Poliomyelitis immunisation programmes.},
  author = {B Aylward and J Andrus and J Bilous and J Smith and R Sanders},
  year = {1997},
  doi = {10.1016/s0140-6736(97)80127-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/9048817/},
  note = {Source identifier: 9048817}
}