@misc{indiciaea283276ec6af,
  title = {Multiple sclerosis: genetic background versus environment.},
  author = {S Ragheb and R P Lisak},
  year = {1993},
  doi = {10.1002/ana.410340402},
  url = {https://pubmed.ncbi.nlm.nih.gov/7692806/},
  note = {Source identifier: 7692806}
}