@misc{indiciae3dc9f6ea8bd1,
  title = {Interferon beta 1a for secondary progressive multiple sclerosis.},
  author = {Richard A C Hughes},
  year = {2003},
  doi = {10.1016/s0022-510x(02)00334-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/12559511/},
  note = {Source identifier: 12559511}
}