@misc{indiciae98112c667672,
  title = {Interferon beta-1a in primary progressive MS: an exploratory, randomized, controlled trial.},
  author = {S M Leary and D H Miller and V L Stevenson and P A Brex and D T Chard and A J Thompson},
  year = {2003},
  doi = {10.1212/wnl.60.1.44},
  url = {https://pubmed.ncbi.nlm.nih.gov/12525716/},
  note = {Source identifier: 12525716}
}