Pyramidal tract involvement in Guillain–Barré syndrome associated with anti-GM1 antibody. Issue 5 (11th May 2010) - Tomita, M; Watanabe, H; Morozumi, S; Kawagashira, Y; Iijima, M; Nakamura, T; Katsuno, M; Koike, H; Hattori, N; Hirayama, M; Kusunoki, S; Sobue, G