@misc{indiciaeb339aa3fdb13,
  title = {Multiple sclerosis: nature or nurture.},
  author = {E S Williams and R O McKeran},
  year = {1991},
  doi = {10.1136/bmj.302.6780.846-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/2025712/},
  note = {Source identifier: 2025712}
}