[1] Walton Ctr, Liverpool, Merseyside, England
[2] Univ Texas McGovern Med Sch, Houston, TX USA
[3] TIRR Mem Hermann, Houston, TX USA
[4] MossRehab Gait & Mot Anal Lab, Elkins Pk, PA USA
[5] Univ Maryland, Sch Med, Baltimore, MD 21201 USA
[6] Brooks Rehabil Hosp, Jacksonville, FL USA
[7] MS Biostat LLC, Clermont, FL USA
[8] Allergan, Irvine, CA USA
[9] Univ Freiburg, Dept Neurol, Freiburg, Germany
[10] Parkinson Klin Ortenau, Wolfach, Germany