[1] Azienda Sanit Univ Friuli Cent ASU FC, Santa Maria Misericordia Univ Hosp, Clin Neurol, Piazzale Santa Maria Misericordia 15, I-33100 Udine, Italy
[2] Univ Udine, Dept Med DAME, Med Sch, Udine, Italy
[3] Azienda Sanit Univ Friuli Cent ASU FC, Santa Maria Misericordia Univ Hosp, Dept Lab Med, Clin Pathol, Udine, Italy
[4] Lyon Univ Hosp, Hosp Neurol & Neurosurg Pierre Wertheimer, French Reference Ctr Paraneoplast Neurol Syndromes, Lyon, France
[5] Univ Claude Bernard Lyon 1, MeLiS, UCBL, INSERM U1314,CNRS,UMR 5284, Lyon, France