Language impairment is associated with faster progression in progressive supranuclear palsy-Richardson syndrome

Garcia-Cordero I, Vargas-Gonzalez JC, Hadian M, Bayram E, Rodriguez-Porcel F, Couto B, Iyer J, Golbe LI, Stephen CD, Pantelyat A, Dale ML, McFarland N, Xie T, Swan M, Kang K, Gunzler D, Wills AM, Boxer A, Litvan I, Lang A, Tartaglia MC.