Chronic Cough and Cerebellar Ataxia With Neuropathy and Bilateral Vestibular Areflexia Syndrome (CANVAS): Screening for Mutations in Replication Factor C Subunit 1 (RFC1) Esther Palones; Vicente Plaza; Lidia Gonzalez-Quereda; Alba Segarra-Casas; Luis Querol; Federico Bertoletti; María José Rodriguez; Pía Gallano; Astrid Crespo-Lessmann;