@misc{indiciae04b34faec20c,
  title = {Poliomyelitis--a persistent problem.},
  author = {L Weinstein},
  year = {1973},
  doi = {10.1056/nejm197302152880714},
  url = {https://pubmed.ncbi.nlm.nih.gov/4682950/},
  note = {Source identifier: 4682950}
}