[1] Mayo Clin, Dept Neurol, Rochester, MN 55902 USA
[2] Cleveland Clin, Lou Ruvo Ctr Brain Hlth, Las Vegas, NV USA
[3] Affiliated Buenos Aires Univ, Inst Neurociencias Buenos Aires, Buenos Aires, DF, Argentina
[4] Hosp Clin Montevideo, Inst Neurol, Parkinson & Movement Disorders Sect, Montevideo, Uruguay
[5] Sungkyunkwan Univ, Samsung Med Ctr, Dept Neurol, Sch Med, Seoul, South Korea
[6] Univ Lagos, Neurol Unit, Dept Med, Fac Clin Sci,Coll Med, Lagos, Nigeria
[7] King Fahad Med City, Natl Neurosci Inst, Riyadh, Saudi Arabia
[8] Ain Shams Univ, Fac Med, Dept Neurol, Cairo, Egypt
[9] Fukuoka Univ, Dept Neurol, Fukuoka, Japan
[10] King Fahad Med Mil Complex, Neurol Unit, Dhahran, Saudi Arabia
[11] Hosp Univ Burgos, Neurol Dept, Burgos, Spain