Regional variation of Guillain-Barre syndrome by Van Den Berg, B, Doets, A, Verboon, C, Harbo, T, Cornblath, D, Willison, H, Islam, Z, Attarian, S, Barroso, F, Bateman, K, Benedetti, L, Van Den Bergh, P, Casasnovas, C, Cavaletti, G, Chavada, G, Claeys, K, Dardiotis, E, Davidson, A, Van Doom, P, Feasby, T, Galassi, G, Gorson, K, Hartung, H, Hsieh, S, Hughes, R, Illa, I, Islam, B, Kusunoki, S, Kuwabara, S, Lehmann, H, Al Miller, J, Mohammad, Q, Monges, S, Nobile Orazio, E, Pardo, J, Pereon, Y, Rinaldi, S, Querol, L, Reddel, S, Reisin, R, Shahrizaila, N, Sindrup, S, Waqar, W, Jacobs, B, IGOS Consortium