Anti-JC virus antibody prevalence in a multinational multiple sclerosis cohort.

Olsson, T; Achiron, A; Alfredsson, L; Berger, T; Brassat, D; Chan, A; Comi, Giancarlo; Eraksoy, M; Hegen, H; Hillert, J; Jensen, Pe; Moiola, L; Myhr, Km; Oturai, A; Schippling, S; Siva, A; Sorensen, Ps; Trampe, Ak; Weber, T; Potts, J; Plavina, T; Paes, D; Subramanyam, M; Wiendl, H; Dib, H; Uren, D; Hemmer, B; Buck, D.