@misc{indiciae0f748b228a6b,
  title = {Multiple sclerosis: changing times.},
  author = {J F Kurtzke},
  year = {1991},
  doi = {10.1159/000110240},
  url = {https://pubmed.ncbi.nlm.nih.gov/2062411/},
  note = {Source identifier: 2062411}
}