GBA variants influence cognitive status in amyotrophic lateral sclerosis. Issue 4 (28th September 2021) - Canosa, Antonio; Grassano, Maurizio; Moglia, Cristina; Iazzolino, Barbara; Peotta, Laura; Gallone, Salvatore; Brunetti, Maura; Barberis, Marco; Sbaiz, Luca; Palumbo, Francesca; Cabras, Sara; Manera, Umberto; et al.