TRAIL and BAFF Serial Serum Levels During Interferon Beta Therapy in MS Patients

13th Annual Meeting of the Amer-Comm-for-Treatment-and-Res-in-Multiple-Sclerosis/24th Congress of the European-Comm-for-Treatment-and-Res-in-Multiple-Sclerosis/5th Congress of the Latin-Amer-Comm-for-Treatment-and-Res-in-Multiple-Sclerosis -- SEP 17-20, 2008 -- Montreal, CANADA