@misc{indiciae3275d0b3d319,
  title = {Multiple sclerosis.},
  author = {G E Crawford},
  year = {1971},
  doi = {10.1016/s0140-6736(71)91907-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4103411/},
  note = {Source identifier: 4103411}
}