[1] Movement Disorders Ctr, Tampa, FL USA
[2] Cleveland Clin, Ctr Neurol Restorat, Cleveland, OH 44106 USA
[3] Teva Pharmaceut Ind, La Jolla, CA USA
[4] Emory Univ, Sch Med, Atlanta, GA 30322 USA
[5] Parkinsons Dis Ctr & Movement Disorders Clin, Houston, TX USA
[6] Methodist Neurol Inst, Houston, TX USA
[7] Weill Cornell Med Coll, Houston, TX USA
[8] Univ North Carolina, Sch Med, Chapel Hill, NC 27515 USA
[9] Yale Sch Med, New Haven, CT USA
[10] Univ Tennessee, Ctr Hlth Sci, Neuro, Memphis, TN 38163 USA
[11] Banner Sun Hlth Res Inst, Sun City, AZ USA
[12] Georgetown Univ, Washington, DC USA