| movementdisorders.org | The Movement Disorder Society |
| wfubmc.edu | Wake Forest Movement Disorders Unit |
| pdf.org | Parkinson s Disease Foundation (PDF) |
| parkinsonsinstitute.org | The Parkinson's Institute |
| parkinsonsaction.org | Parkinson's Action Network |
| parkinson.org | National Parkinson Foundation, Inc. |
| nih.gov | National Institute of Neurological Disorders and Stroke |
| michaeljfox.org | Michael J. Fox Foundation |
| dystonia-foundation.org | Dystonia Medical Research Foundation |
| apdaparkinson.org | American Parkinson Disease Association |
| dystonia-foundation.org | www.dystonia-foundation.org/ |
United States , Michigan , Grand Rapids