@misc{indiciae433127e77fe4,
  title = {How effective is measles immunisation?},
  author = {M D Coulter and B M Jones},
  year = {1977},
  doi = {10.1136/bmj.2.6079.120-d},
  url = {https://pubmed.ncbi.nlm.nih.gov/871775/},
  note = {Source identifier: 871775}
}