Copyright © 2003-2009 Parkinson Research Foundation, Inc. All rights reserved worldwide. This national website which is dedicated to Parkinson's disease is also your ultimate resource for information on Parkinson's Research, PD Symptoms, Motor symptoms, Non-Motor Symptoms, Incidence, Related diseases, Parkinson-Plus diseases, Pathology, Pathophysiology, Genetic, Toxins, Head trauma, Treatment, Pharmacological Treatments, Levodopa, Dopamine Agonists, MAO-B Inhibitor, SSRI's and SSNRI's, Surgical Interventions, Nutrients, Physical exercise, Prognosis, References, External links, Eponymous diseases, Geriatrics, Zelapar, Restless Leg Syndrome, and related Neurological disorders. Although many contributions are American and from Canada, the site seeks to support patients, caregivers, doctors and researchers worldwide.