Combining capture ELISA and in vivo MxA test to detect neutralizing antibodies to interferon-beta in a large cohort of multiple sclerosis patients - Bulat, K; Cepok, S; von Geldern, G; Hochgesand, S; Menge, T; Nessler, S; Hartung, HP; Hemmer, B (Aktuelle Neurologie, 2007)