Co-occurrence of Chiari malformation type 1 and small fiber neuropathy in a family with a novel COL6A5 null variant. - Masciarelli F; Dell'Aversana D; Vitale F; Ciccarelli G; Micale L; Morlino S; Caporaso G; Tozza S; Provitera V; Castori M; Nolano M (Clinical autonomic research : official journal of the Clinical Autonomic Research Society, 2026)