Longitudinal changes of SARA scale in Friedreich ataxia: Strong influence of baseline score and age at onset oleh Luca Porcu, Mario Fichera, Lorenzo Nanetti, Eliana Rulli, Paola Giunti, Michael H. Parkinson, Alexandra Durr, Claire Ewenczyk, Sylvia Boesch, Wolfgang Nachbauer, Elisabetta Indelicato, Thomas Klopstock, Claudia Stendel, Francisco Javier Rodríguez de Rivera, Ludger Schöls, Zofia Fleszar, Ilaria Giordano, Claire Didszun, Anna Castaldo, Myriam Rai, Thomas Klockgether, Massimo Pandolfo, Jörg B. Schulz, Kathrin Reetz, Caterina Mariotti, for the EFACTS Study Group