Diagnosing Premotor Multiple System Atrophy: Natural History and Autonomic Testing in an Autopsy Confirmed Cohort.

Vichayanrat E, Valerio F, Koay S, De Pablo-Fernandez E, Panicker J, Morris H, Bhatia K, Chelban V, Houlden H, Quinn N, Navarro-Otano J, Miki Y, Holton J, Warner T, Mathias C, Iodice V.