Biogen; Novartis; Roche; Bayer HealthCare; Pfizer Inc.; Merck & Co. Inc.; Sanofi; Teva Pharmaceutical Industries Ltd.; GlaxoSmithKline; Acorda Therapeutics Inc.; Actelion Pharmaceuticals (Johnson & Johnson); EMD Serono (Merck KGaA); AbbVie Inc.; Betaseron; CinnoVex; Extavia; Rebif; Tysabr