The S-Factor, a New Measure of Disease Severity in Spinocerebellar Ataxia: Findings and Implications

Louisa P. Selvadurai; Susan L. Perlman; George R. Wilmot; Sub H. Subramony; Christopher M. Gomez; Tetsuo Ashizawa; Henry L. Paulson; Chiadi U. Onyike; Liana S. Rosenthal; Haris I. Sair; Sheng-Han Kuo; Eva-Maria Ratai; Theresa A. Zesiewicz; Khalaf O. Bushara; Gülin Öz; Cameron Dietiker; Michael D. Geschwind; Alexandra B. Nelson; Puneet Opal; Talene A. Yacoubian; Peggy C. Nopoulos; Vikram G. Shakkottai; Karla P. Figueroa; Stefan M. Pulst; Peter E. Morrison; Jeremy D. Schmahmann