1. Department of Neurological Sciences University of Vermont, Robert Larner MD College of Medicine Burlington Vermont
2. Department of Neurological Sciences University of Vermont Medical Center Burlington Vermont
3. Option Care Enterprises Bannockburn Illinois
4. South Shore Neurologic Associates Islip New York
5. Department of Medical Biostatistics University of Vermont Burlington Vermont
6. Pharmacotherapy Service University of Vermont Medical Center Burlington Vermont
7. Pharmacology Department, Medical Division National Research Center Cairo Egypt
8. Department of Neurology Columbia University New York New York