@misc{indiciaec82bd0f349e0,
  title = {Measles immunisation level.},
  author = {J D Middleton and G T Pollock},
  year = {1984},
  doi = {10.1016/s0140-6736(84)90103-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/6140478/},
  note = {Source identifier: 6140478}
}