Limitations of the Unified Multiple System Atrophy Rating Scale as outcome measure for clinical trials and a roadmap for improvement

Jose‐Alberto Palma, Patricio Millar Vernetti, Miguel Perez, Florian Krismer, Klaus Seppi, Alessandra Fanciulli, Wolfgang Singer, Phillip A. Low, Italo Biaggioni, Lucy Norcliffe‐Kaufmann, Maria Teresa Pellecchia, Marı́a José Martı́, Han‐Joon Kim, Marcelo Merello, Iva Stanković, Werner Poewe, Rebecca A. Betensky, Gregor K. Wenning, Horacio Kaufmann