A doubleblind, placebo-controlled randomized clinical trial of alpha-tocopherol (vitamin E) in the treatment of amyotrophic lateral sclerosis - Desnuelle, C; Dib, M; Garrel, C; Favier, A (ALS riluzole-tocopherol Study Group. Amyotroph Lateral Scler Other Motor Neuron Disord, 2001)