[1] Baylor Coll Med, Parkinsons Dis Ctr, Dept Neurol, Houston, TX 77030 USA
[2] Mayo Clin Scottsdale, Scottsdale, AZ USA
[3] Indiana Univ, Sch Med, Indianapolis, IN 46204 USA
[4] Rush Univ, Med Ctr, Chicago, IL 60612 USA
[5] Long Isl Jewish Med Ctr, New Hyde Pk, NY 11042 USA
[6] Univ Hosp Cleveland, Cleveland, OH 44106 USA
[7] Med Coll Georgia, Augusta, GA 30912 USA
[8] Univ Miami, Miami, FL 33152 USA
[9] Barrow Neurol Inst, Phoenix, AZ 85013 USA
[10] Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA