Comment on

• A longitudinal study of abnormalities on MRI and disability from multiple sclerosis.

  Brex PA, Ciccarelli O, O'Riordan JI, Sailer M, Thompson AJ, Miller DH. Brex PA, et al. N Engl J Med. 2002 Jan 17;346(3):158-64. doi: 10.1056/NEJMoa011341. N Engl J Med. 2002. PMID: 11796849
• Premyelinating oligodendrocytes in chronic lesions of multiple sclerosis.

  Chang A, Tourtellotte WW, Rudick R, Trapp BD. Chang A, et al. N Engl J Med. 2002 Jan 17;346(3):165-73. doi: 10.1056/NEJMoa010994. N Engl J Med. 2002. PMID: 11796850