Impact of 3 Tesla MRI on interobserver agreement in clinically isolated syndrome: A MAGNIMS multicentre study by Hagens, M, Burggraaff, J, Kilsdonk, I, Ruggieri, S, Collorone, S, Cortese, R, Cawley, N, Sbardella, E, Andelova, M, Amann, M, Lieb, J, Pantano, P, Lissenberg-Witte, B, Killestein, J, Oreja-Guevara, C, Wuerfel, J, Ciccarelli, O, Gasperini, C, Lukas, C, Rovira, A, Barkhof, F, Wattjes, M, MAGNIMS Study Group, Palace, J