A Randomized, Double-blind, Placebo-Controlled Study of Latrepirdine in Patients With Mild to Moderate Huntington Disease by Kieburtz, K, Landwehrmeyer, G, Cudkowicz, M, Dorsey, E, Feigin, A, Hunt, V, Kayson, E, McDermott, M, Noonberg, S, Seitz, W, Soliveri, P, Walker, F, Burgunder, J, Romero, I, Magara, A, Stebler, Y, Rickards, H, Wright, J, De Souza, J, Barker, R, Mason, S, Di Pietro, A, Goodman, A, O'Keeffe, D, Langlois, M