[1] Paracelsus Elena Hosp, Ctr Parkinsonism & Movement Disorders, D-34128 Kassel, Germany
[2] Kings Coll Hosp London, Natl Parkinson Fdn Ctr Excellence, London, England
[3] Fdn Jimenez Diaz, Dept Neurol, Movement Disorders Unit, E-28040 Madrid, Spain
[4] Wayne State Univ, Sch Med, Parkinsons Dis & Movement Disorders Program, Henry Ford West Bloomfield Hosp, W Bloomfield, MI USA
[5] Danube Hosp, Dept Neurol, Vienna, Austria
[6] Danube Hosp, Karl Landsteiner Inst Neuroimmunol & Neurodegener, Vienna, Austria
[7] Bispebjerg Hosp, Movement Disorder Clin, DK-2400 Copenhagen, Denmark
[8] Hosp Clin Univ, Dept Neurol, Santiago De Compostela, Spain
[9] Med Univ Innsbruck, Dept Neurol, A-6020 Innsbruck, Austria
[10] Univ Med Ctr, Dept Neurosurg, Gottingen, Germany
[11] Univ Marburg, Dept Neurol, Marburg, Germany
[12] European Brain Council Brussels, Brussels, Belgium
[13] Neurol Krankenhaus Munchen, Dept Neurol, Munich, Germany
[14] Univ Kiel, Kiel, Germany
[15] Ctr Hosp Univ Rennes, Rennes, France
[16] Movement Disorders Clin, Beelitz, Germany
[17] Royal Melbourne Hosp, Melbourne, Vic, Australia
[18] Cleveland Clin, Ctr Neurol Restorat, Cleveland, OH 44106 USA
[19] Florida Int Univ, Herbert Wertheim Coll, Sch Med, Miami, FL 33199 USA
[20] Univ Groningen, Univ Med Ctr Groningen, Dept Neurol, NL-9713 AV Groningen, Netherlands
[21] UCL Inst Neurol, London, England
[22] Univ Sydney, Brain & Mind Res Inst, Parkinsons Dis Res Clin, Sydney, NSW 2006, Australia
[23] Hosp Univ Ramon & Cajal, Dept Neurol, Madrid, Spain
[24] Carlos III Inst Hlth, Natl Ctr Epidemiol, Madrid, Spain
[25] Carlos III Inst Hlth, CIBERNED, Madrid, Spain
[26] Univ Lund Hosp, Dept Neurol, S-22185 Lund, Sweden
[27] Univ Queensland, Sch Med, Royal Brisbane Clin Sch, Brisbane, Qld, Australia
[28] Georgios Gennimatas Gen Hosp Athens, Dept Neurol, Athens, Greece
[29] Med Univ Graz, Graz, Austria