@misc{indiciae1b1323e5276d,
  title = {Progressive spinal multiple sclerosis.},
  author = {P A Calabresi and D W Giang and A D Goodman},
  year = {1993},
  doi = {10.1055/s-2008-1041142},
  url = {https://pubmed.ncbi.nlm.nih.gov/8146481/},
  note = {Source identifier: 8146481}
}