1. Clinical characteristics of patients with spinocerebellar ataxias 1, 2, 3 and 6 in the US; a prospective observational study Ashizawa, Tetsuo; Figueroa, Karla; Perlman, Susan; Gomez, Christopher; Wilmot, George; Schmahmann, Jeremy; Ying, Sarah; Zesiewicz, Theresa; Paulson, Henry; Shakkottai, Vikram; Bushara, Khalaf; Kuo, Sheng-Han; Geschwind, Michael; Xia, Guangbin; Mazzoni, Pietro; Krischer, Jeffrey; Cuthbertson, David; Holbert, Amy; Ferguson, John; Pulst, Stefan; Subramony, SH 2013 Articles Cerebellar ataxiaTherapeuticsClinical trialsClinical trials--DesignCerebellum--DiseasesRare diseases--ResearchFriedreich's ataxiaMedicine