McDonald WI , Compston A , Edan G , Goodkin D , Hartung HP , Lublin FDet al.Recommended diagnostic criteria for multiple sclerosis: guidelines from the International Panel on the diagnosis of multiple sclerosis . Ann Neurol2001; 50: 121-127 .
2.
Lublin FD , Reingold SC.Defining the clinical course of multiple sclerosis: results of an international survey . Neurology1996; 46: 907-911 .
3.
Cottrell DA , Kremenchutzky M , Rice GP , Koopman WJ , Hader W , Baskerville Jet al.The natural history of multiple sclerosis: a geographically based study. 5. The clinical features and natural history of primary progressive multiple sclerosis . Brain1999; 122: 625-639 .
4.
Andersson PB , Waubant E , Gee L , Goodkin DE.Multiple sclerosis that is progressive from the time of onset: clinical characteristics and progression of disability . Arch Neurol1999; 56: 1138-1142 .
5.
Thompson AJ , Kermode AG , MacManus DG , Kendall BE , Kingsley DP , Moseley IFet al.Patterns of disease activity in multiple sclerosis: clinical and magnetic resonance imaging study . BMJ1990; 300: 631-634 .
6.
Thompson AJ , Kermode AG , Wicks D , MacManus DG , Kendall BE , Kingsley DPet al.Major differences in the dynamics of primary and secondary progressive multiple sclerosis . Ann Neurol1991; 29: 53-62 .
7.
Luks TL , Goodkin DE , Nelson SJ , Majumdar S , Bacchetti P , Portnoy Det al.A longitudinal study of ventricular volume in early relapsing -remitting multiple sclerosis . Mult Scler2000; 6: 332-337 .
8.
Rudick RA , Fisher E , Lee J-C , Simon J , Jacobs L , MSCRG.Use of the brain parenchymal fraction to measure whole brain atrophy in relapsing -remitting MS . Neurology1999; 53: 1698-1704 .
9.
Chard DT , Griffin CM , Parker GJ , Kapoor R , Thompson AJ , Miller DH.Brain atrophy in clinically early relapsing -remitting multiple sclerosis . Brain2002; 125: 327-337 .
10.
Weinshenker BG , Bass B , Rice GP , Noseworthy J , Carriere W , Baskerville Jet al.The natural history of multiple sclerosis: a geographically based study. I. Clinical course and disability . Brain1989; 112: 133-146 .
11.
Arnold DL.Magnetic resonance spectroscopy: imaging axonal damage in MS . J Neuroimmunol1999; 98: 2-6 . [Review; 12 refs]
12.
Trapp BD , Ransohoff RM , Fisher E , Rudick RA.Neurodegeneration in multiple sclerosis: relationship to neurological disability . Neuroscientist1999; 5: 48-57 .
13.
Confavreux C , Vukusic S , Moreau T , Adeleine P.Relapses and progression of disability in multiple sclerosis . N Engl J Med2000; 343: 1430-1438 .
14.
Lucchinetti C , Bruck W , Rodriquez M , Lassmann H.Distinct pattern of multiple sclerosis pathology indicates heterogeneity in pathogenesis . Brain Pathol1996; 6: 259-259 .
15.
Bruck W , Lucchinetti C , Lassmann H.The pathology of primary progressive multiple sclerosis . Mult Scler2002; 8: 93-97 .
16.
Thompson AJ , Montalban X , Barkhof F , Brochet B , Filippi M , Miller DHet al.Diagnostic criteria for primary progressive multiple sclerosis: a position paper . Ann Neurol2000; 47: 831-835 .