Misclassification of Patients with Spinocerebellar Ataxia as having Psychogenic Postural Instability based on Computerized Dynamic Posturography oleh Susan J Herdman, Susan J Herdman, Susan J Herdman, Courtney D Hall, Courtney D Hall, Rachael eEggers, Stasha eSampson, Sydne eGoodier, Becky eFilson